BIO Word Roots Davis

  1. a-, an-
    absence or lack; acardia, lack of a heart, anaerobic, in the absence of oxygen
  2. ab-
    departing from, away from; abnormal, departing from normal
  3. acou-
    hearing; acoustics, the science of sound
  4. ac-, acro-
    extreme or extremity, peak; acrodermatitis, inflammation of the skin of the extremities
  5. ad-
    to or toward; adorbital, toward the orbit
  6. aden-, adeno-
    gland; adeniform, resembling a gland in shape
  7. adren-
    toward the kidney; adrenal gland, adjacent to the kidney
  8. aero-
    air; aerobic respiration, oxygen-requiring metabolism
  9. af-
    toward; afferent neurons, which carry impulses to the central nervous system
  10. agon-
    contest; agonistic and antagonistic muscles, which oppose each other
  11. alb-
    white; corpus albicans of the ovary, a white scar tissue
  12. aliment-
    nourish; alimentary canal, or digestive tract
  13. allel-
    of one another; alleles, alternative expressions of a gene
  14. amphi-
    on both sides, of both kinds; amphibian, an organism capable of living in water and on land
  15. ana-
    apart, up, again; anaphase of mitosis, when the chromosomes separate
  16. anastomos-
    come together; arteriovenous anastomosis, a connection between an artery and a vein
  17. aneurysm
    a widening; aortic aneurysm, a weak spot that causes enlargement of the blood vessel
  18. angi-
    vessel; angiitis, inflammation of a lymph vessel or blood vessel
  19. angin-
    choked; angina pectoris, a choked feeling in the chest due to dysfunction of the heart
  20. ant-, anti-
    opposed to, preventing or inhibiting; anticoagulant, a substance that prevents blood coagulation
  21. ante-
    preceding, before; antecubital, in front of the elbow
  22. aort-
    great artery; aorta
  23. ap-, api-
    tip, extremity; apex of the heart
  24. append-
    hang to; appendicular skeleton
  25. aqua-, aque-
    water; aqueous solutions
  26. arbor
    tree; arbor vitae of the cerebellum, the treelike pattern of white matter
  27. areola-
    open space; areolar connective tissue, a loose connective tissue
  28. arrect-
    upright; arrector pili muscles of the skin, which make the hairs stand erect
  29. arthr-, arthro-
    joint; arthropathy, any joint disease
  30. artic-
    joint; articular surfaces of bones, the points of connection
  31. atri-
    vestibule; artia, upper chambers of the heart
  32. auscult-
    listen; auscultatory method for measing blood pressure
  33. aut-, auto-
    self; autogenous, self-generated
  34. ax-, axi-, axo-
    axis, axle; axial skeleton, axis of vertebral column
  35. azyg-
    unpaired; axygous vein, an unpaired vessel
  36. baro-
    pressure; baroreceptors for monitoring blood pressure
  37. basal
    base; basal lamina of the epithelial basement membrane
  38. bi-
    two; bicuspid, having two cusps
  39. bili-
    bile; bilirubin, a bile pigment
  40. bio-
    life; biology, the study of life and living organisms
  41. blast-
    bud or germ; blastocyte, undifferentiated embryonic cell
  42. brachi-
    arm; brachial plexus of the peripheral nervous system supplies the arm
  43. brady-
    slow; bradycardia, abnormally slow heart rate
  44. brev-
    short; peroneus brevis, a short leg muscle
  45. broncho-
    bronchus; bronchospasm, spasmodic contraction of the bronchial muscle
  46. bucco-
    cheek; buccolabial, pertaining to the cheek and lip
  47. calor-
    heat; calories, a measure of energy
  48. capill-
    hair; blood and lymph capillaries
  49. caput-
    head; decapitate, remove the head
  50. carcin-
    cancer; carcinogen, a cancer-causing agent
  51. cardi-, cardio-
    heart; cardiotoxic, harmful to the heart
  52. carneo-
    flesh; trabeculae carneae, ridges of muscle in the ventricles of the heart
  53. carot-
    • (1) carrot, (2) stupor;
    • (1) carotene, an organge pigment,
    • (2) carotid arteries in the neck, blockage causes fainting
  54. cata-
    down; catabolism, chemical breakdown
  55. cuad-
    tail; caudal (directional term)
  56. cec-
    blind; cecum of large intestine, a blind-ended pouch
  57. cele-
    abdominal; celiac artery, in the abdomen
  58. cephal-
    head; cephalometer, an instrument for measuring the head
  59. cerebro-
    brain, especially the cerebrum; cerebrospinal, pertaining to the brain and spinal cord
  60. cervic-, cervix
    neck; cervix of the uterus
  61. chiasm-
    crossing; optic chiasma, where optic nerves cross
  62. chole-
    bile; cholesterol, cholecystokinin, a bile-secreting hormone
  63. chondr-
    cartilage; chondrogenic, giving rise to cartilage
  64. chrom-
    colored; chromosome, so named because they stain darkly
  65. cili-
    small hair; ciliated epithelium
  66. circum-
    around; circumnuclear, surrounding the nucleus
  67. clavic-
    key; clavicle, a "skeleton key"
  68. co-, con-
    together; concentric, common center, together in the center
  69. coccy-
    cuckoo; coccyx, which is beak-shaped
  70. cochlea
    snail shell; the chchlea of the inner ear, which is coiled like a snail shell
  71. coel-
    hollow; coelom, the ventral body cavity
  72. commis-
    united; gray commissure of the spinal cord connects the two columns of gray matter
  73. concha
    shell; nasal conchae, coiled shelves of bone in the nasal cavity
  74. contra-
    against; contraceptive, agent preventing conception
  75. corn-, cornu-
    horn; stratum corneum, outer layer of the skin composed of (horny) cells
  76. corona
    crown; coronal suture of the skull
  77. corp-
    body; corpse, corpus luteum, hormone-secreting body in the ovary
  78. cort-
    bark; cortex, the outer layer of the brain, kidney, adrenal glands, and lymph nodes
  79. cost-
    rib; intercostal, between the ribs
  80. crani-
    skull; craniotomy, a skull operation
  81. crypt-
    hidden; cryptomenorrhea, a condition in which menstrual symptoms are experienced but no external loss of blood occurs
  82. cusp-
    pointed; bicuspid, tricuspid valves of the heart
  83. cutic-
    skin; cuticle of the nail
  84. cyan-
    blue; cyanosis, blue color of the skin due to lack of oxygen
  85. cyst-
    sac, bladder; cystitis, inflammation of the urinary bladder
  86. cyt-
    cell; cytology, the study of cells
  87. de-
    undoing, reversal, loss, removal; deactivation, becoming inactive
  88. decid-
    falling off; deciduous (milk) teeth
  89. delta
    triangular; deltoid muscle, roughly triangular in shape
  90. den-, dent-
    tooth; dentin of the tooth
  91. dendr-
    tree, branch; dendrites, telodendria, both branches of a neuron
  92. derm-
    skin; dermis, deep layer of the skin
  93. desm-
    bond; desmosome, which binds adjacent epithelial cells
  94. di-
    twice, double; dimorphism, having two forms
  95. dia-
    through, between; diaphragm, the wall through or between two areas
  96. dialys-
    separate, break apart; kidney dialysis, in which waste products are removed from the blood
  97. diastol-
    stand apart; cardiac diastole, between successive contractions of the heart
  98. diure-
    urinate; diuretic, a drug that increases urine output
  99. dors-
    the back; dorsal, dorsum, dorsiflexion
  100. duc-, duct
    lead, draw; ductus deferns which carries sperm from the epididymis into the urethra during ejaculation
  101. dura-
    hard; dura mater, tough outer meninx
  102. dys-
    difficult, faulty, painful; dyspspsia, disturbed digestion
  103. ec-, ex-, ecto-
    out, outside, away from; excrete, to remove materials from the body
  104. ectop-
    displaced; ectopic pregnancy, ectopic focus for initiation of heart contraction
  105. edem-
    swelling; edema, accumulation of water in body tissues
  106. ef-
    away; efferent nerve fibers, which carry impulses away from the central nervous system
  107. ejac-
    to shoot forth; ejaculation of semen
  108. embol-
    wedge; embolus, an obstructive object traveling in the bloodstream
  109. en-, em-
    in, inside; encysted, enclosed in a cyst or capsule
  110. enceph-
    brain; encephalitis, inflammation of the brain
  111. endo-
    within, inner; endocytosis, taking particles into a cell
  112. entero-
    intestine; enterologist, one who specializes in the study of intestinal disorders
  113. epi-
    over, above; epidermis, outer layer of skin
  114. erythr-
    red; erythema, redness of the skin, erythrocyte, red blood cell
  115. eso-
    within; esophagus
  116. eu-
    well; euesthesia, a normal state of the senses
  117. excret-
    separate; excretory system
  118. exo-
    outside, outer layer; exophthalmos, an abnormal protrusion of the eye from the orbit
  119. extra-
    outside, beyond; extracellular, outside the body cells of an organism
  120. extrins-
    from the outside; extrinsic regulation of the heart
  121. fasci-, fascia-
    bundle, band; superficial and deep fascia
  122. fenestr-
    window; fenestrated capillaries
  123. ferr-
    iron; transferrin, ferritin, both iron-storage proteins
  124. flagell-
    whip; flagellum, the tail of a sperm cell
  125. flat-
    blow, blown; flatulence
  126. folli-
    bag, bellows; hair follicle
  127. fontan-
    fountain; fontanelles of the fetal skull
  128. foram-
    opening; foamen magnum of the skull
  129. foss-
    ditch; fossa ovalis of the heart, mandibular fossa of the skull
  130. gam-, gamet-
    married, spouse; gametes, the sex cells
  131. gangli-
    swelling, or knot; dorsal root ganglia of the spinal nerves
  132. gastr-
    somach; gastrin, a hormone that influences gastric acid secretion
  133. gene
    beginning, origin; genetics
  134. germin-
    grow; germinal epithelium of the gonads
  135. gero-, geront-
    old main; gerontology, the study of aging
  136. gest-
    carried; gestation, the period from conception to birth
  137. glauc-
    gray; glaucoma, which causes gradual blindness
  138. glom-
    ball; glomeruli, clusters of capillaries in the kidneys
  139. glosso-
    tongue; glossopathy, any disease of the tongue
  140. gluco-, glyco-
    gluconeogenesis, the production of glucose fron noncarbohydrate molecules
  141. glute-
    buttock; gluteus maximus, largest muscle of the buttock
  142. gnost-
    knowing; the gnostic sense, a sense of awareness of self
  143. gompho-
    nail; gomphosis, the term applied to the joint between tooth and jaw
  144. gon-, gono-
    seed, offspring; gonads, the sex organs
  145. gust-
    taste; gustatory sense, the sense of taste
  146. hapt-
    fasten, grasp; hapten, a partial antigen
  147. hema-, hemato-, hemo-
    blood; hematocyst, a cyst containing blood
  148. hemi-
    half; hemiglossal, pertaining to one-half of the tongue
  149. hepat-
    liver; hepatitis, inflammation of the liver
  150. hetero-
    different or other; heterosexuality, sexual desire for a person of the opposite sex
  151. hiat-
    gap; the hiatus of the diaphragm, the opening through which the esophagus passes
  152. hippo-
    horse; hippocampus of the brain, shaped like a seahorse
  153. hirsut-
    hairy; hirsutism, excessive body hair
  154. hist-
    tissue; histology, the study of tissues
  155. holo-
    whole; holocrine glands, whose secretions are whole cells
  156. hom-, homo-
    same; homeoplasia, formation of tissue similar to normal tissue; homocentric, having the same center
  157. hormon-
    to excite; hormones
  158. humor-
    a fluid; humoral immunity, which involves antibodies circulating in the blood
  159. hyal-
    clear; hyaline cartilage, which has no visible fibers
  160. hydr-, hydro-
    water; dehydration, loss of body water
  161. hyper-
    excess; hypertension; excessive tension
  162. hypno-
    sleep; hypnosis, a sleeplike state
  163. hypo-
    below, deficient; hypodermic, beneath the skin, hypokalemia, deficiency of potassium
  164. hyster-, hystero-
    uterus or womb; hysterectomy, removal of the uterus, hysterodynia, pain in the womb
  165. ile-
    intestine; ileum, the last portion of the small intestine
  166. im-
    not; impermeable, not permitting passage, not permeable
  167. inter-
    between; intercellular, between the cells
  168. intercal-
    insert; intercalated discs, the end membranes between adjacent cardiac muscle cells
  169. intra-
    within, inside; intracellular, inside the cell
  170. iso-
    equal, same; isothermal, equal, or same, temperature
  171. jugal-
    throat; jugular veins, prominent vessels in the neck
  172. juxta-
    near, close to; juxtaglomerular apparatus, a cell cluster next to a glomerulus in the kidneys
  173. karyo-
    kernel, nucleus; karyotype, the assemblage of the nuclear chromosomes
  174. kera-
    horn; keratin, the water-repellent protein of the skin
  175. kilo-
    thousand; kilocalories, equal to 1000 calories
  176. kin-, kines-
    move; kinetic energy, the energy of motion
  177. labi-, labri-
    lip; labial frenulum, the membrane which joins the lip to the gum
  178. lact-
    milk; lactose, milk sugar
  179. lacun-
    space, cavity, lake; lacunae, the spaces occupied by cells of cartilage and bone tissue
  180. lamell-
    small plate; concentic lamellae, rings of bone matrix in compact bone
  181. lamina
    layer, sheet; basal lamina, part of the epithelial basement membrane
  182. lat-
    wide; latissimus dorsi, a broad muscle of the back
  183. laten-
    hidden; latent period of a muscle twitch
  184. later-
    side; lateral (directional term)
  185. leuko-
    white; leukocyte, white blood cell
  186. leva-
    raise, elevate; levator labii superioris, muscle that elevates upper lip
  187. lingua-
    tongue; lingual tonsil, adjacent to the tongue
  188. lip-, lipo-
    fat, lipid; lipophage, a cell that has taken up fat in its cytoplasm
  189. lith-
    stone; cholelithiasis, gallstones
  190. luci-
    clear; stratum lucidum, clear layer of the epidermis
  191. lumen
    light; lumen, center of a hollow structure
  192. lut-
    yellow; corpus luteum, a yellow, hormone-secreting structure in the ovary
  193. lymph
    water; lymphatic circulation, return of clear fluid to the bloodstream
  194. macro-
    large; macromolecule, large molecule
  195. macula
    spot; macula lutea, yellow spot on the retina
  196. magn-
    large; foramen magnum, largest opening of the skull
  197. mal-
    bad, abnormal; malfunction, abnormal functioning of an organ
  198. mamm-
    breast; mammary gland, breast
  199. mast-
    breast; mastectomy, removal of a mammary gland
  200. mater
    mother; dura matter, pia mater, membranes that envelop the brain
  201. meat-
    passage; external acoustic meatus, the ear canal
  202. medi-
    middle; medial (directional term)
  203. medull-
    marrow; medulla, the middle portion of the kidney, adrenal gland, and lymph node
  204. mega-
    large; megakaryocyte, large precursor cell of platelets
  205. meio-
    less; meiosis, nuclear division that halves the chromosome number
  206. melan-
    black; melanocytes, which secrete the black pigment melanin
  207. men-, menstru-
    month; menses, the cyclic menstrual flow
  208. meningo-
    membrane; meningitis, inflammation of the membranes of the brain
  209. mer-, mero-
    a part; merocrine glands, the secretions of which do not include the cell
  210. meso-
    middle; mesoderm, middle germ layer
  211. meta-
    beyond, between, transition; metatarsus, the part of the foot between the tarsus and the phalanges
  212. metro-
    uterus; endometrium, the linning of the uterus
  213. micro-
    small; micoscope, an instrument used to make small objects appear larger
  214. mictur-
    urinate; micturition, the act of voiding the bladder
  215. mito-
    thread, filament; mitochondria, small, filament-like structures located in cells
  216. mnem-
    memory; amnesia
  217. mono-
    single; monospasm, spasm of a single limb
  218. morpho-
    form; morphology, the study of form and structure or orgnisms
  219. multi-
    many; multinuclear, having several nuclei
  220. mur-
    wall; intramural ganglion, a nerve junction within an organ
  221. muta-
    change; mutation, change in the base sequence of DNA
  222. myelo-
    spinal cord, marrow; myeloblasts, cells of the bone marrow
  223. myo-
    muscle; myocardium, heart muscle
  224. nano-
    dwarf; nanometer, one-billionth of a meter
  225. narco-
    numbness; narcotic, a drug producing stupor or numbed sensations
  226. natri-
    sodium; atrial natriuretic peptide, a sodium-regulating hormone
  227. necro-
    death; necrosis, tissue death
  228. neo-
    new; neoplasm, an abnormal growth
  229. nephro-
    kidney; nephritis, inflammation of the kidney
  230. neuro-
    nerve; neurophysiology, the physiology of the nervous system
  231. noci-
    harmful; nociceptors, receptors for pain
  232. nom-
    name; innominate artery, innominate bone
  233. noto-
    back; notochord, the embryonic structure that precedes the vertebral column
  234. nucle-
    pit, kernel, little nut; nucleus
  235. nutri-
    feed, nourish; nutrition
  236. ob-
    before, against; obstruction, impending or blocking up
  237. oculo-
    eye; monocular, pertaining to one eye
  238. odonto-
    teeth; orthodontist, one who specializes in proper positioning of the teeth in relation to each other
  239. olfact-
    smell; olfactory nerves
  240. oligo-
    few; oligodendrocytes, neuroglial cells with few branches
  241. onco-
    a mass; oncology, study of cancer
  242. oo-
    egg; oocyte, precursor of female gamete
  243. opthalmo-
    eye; ophthalmology, the study of the eyes and related disease
  244. orb-
    circular; orbicularis oculi, muscle that encircles the eye
  245. orchi-
    testis; cryptorchidism, failure of the testes to descend into the scrotum
  246. org-
    living; organism
  247. ortho-
    straight, direct; orthopedic, correction of deformities of the musculoskeletal system
  248. osm-
    smell; anosmia, loss of sense of smell
  249. osmo-
    pushing; osmosis
  250. osteo-
    bone; osteodermia, bony formations in the skin
  251. oto-
    ear; otoscope, a device for examining the ear
  252. ov-, ovi-
    egg; ovum, oviduct
  253. oxy-
    oxygen; oxygenation, the saturation of a substance with oxygen
  254. pan-
    all, universal; panacea, a cure-all
  255. papill-
    nipple; dermal papillae, projections of the dermis into the epidermal area
  256. para-
    beside, near; paranuclear, beside the nucleus
  257. pect-, pectus
    breast; pectoralis major, a large chest muscle
  258. pelv-
    a basin; pelvic girdle, which cradles the pelvic organs
  259. peni-
    a tail; penis; penile urethra
  260. penna-
    feather; unipennate, bipennate muscles, whose fascicles have a feathered appearance
  261. pent-
    five; pentose, a 5-carbon sugar
  262. pep-, peps-, pept-
    digest; pepsin, a digestive enzyme of the stomach; peptic ulcer
  263. per-, permea-
    through; permeate, permeable
  264. peri-
    around; perianal, situated around the anus
  265. phago-
    eat; phagocyte, a cell that engulfs and digests particles or cells
  266. pheno-
    show, appear; phenotype, the physical appearance of an individual
  267. phleb-
    vein; phlebitis, inflammation of the veins
  268. pia
    tender; pia mater, delicate inner membrane around the brain and spinal cord
  269. pili
    hair; arrector pili muscles of the skin, which make the hairs stand erect
  270. pin-, pino-
    drink; pinocytosis, the engulfing of small particles by a cell
  271. platy-
    flat, broad; platysma, broad, flat muscle of the neck
  272. pleur-
    side, rib; pleural serosa, the membrane that lines the thoracic cavity and covers the lungs
  273. plex-, plexus
    net, network; brachial plexus, the network of nerves that supplies the arm
  274. pneumo-
    air, wind; pneumothorax, air in the thoracic cavity
  275. pod-
    foot; podiatry, the treatment of foot disorders
  276. poly-
    multiple; polymorphism, multiple forms
  277. post-
    after, behind; posterior, places behind (a specific) part
  278. pre-, pro-
    before, ahead of; prenatal, before birth
  279. procto-
    rectum, anus; proctoscope, an instrument for examining the rectum
  280. pron-
    bent forward; prone, pronate
  281. propri-
    one's own; proprioception, awareness of the body parts and movement
  282. pseudo-
    false; pseudotumor, a false tumor
  283. psycho-
    mind, psyche; psychogram, a chart of personality traits
  284. ptos-
    fall; renal ptosis, a condition in which the kidneys drift below their normal position
  285. pub-
    of the pubis; puberty
  286. pulmo-
    lung; pulmonary artery, which brings blood to the lungs
  287. pyo-
    pus; pyocyst, a cyst that contains pus
  288. pyro-
    fire; pyrogen, a substance that induces fever
  289. quad-, quadr-
    four-sided; quadratus lumborum, a muscle with a square shape
  290. re-
    back, again; reinfect
  291. rect-
    straight; rectus abdominis, rectum
  292. ren-
    kidney; renal, renin, an enzyme secreted by the kidney
  293. retin, retic-
    net, network; endoplasmic reticulum, a network of membranous sacs within a cell
  294. retro-
    backward, behind; retrogression, to move backward in development
  295. rheum-
    watery flow, change, or flux; rheumatoid arthritis, rheumatic fever
  296. rhin-, rhino-
    nose; rhinitis, inflammation of the nose
  297. ruga-
    fold, wrinkle; rugae, the folds of the stomach, gallbladder, and urinary bladder
  298. sagitt-
    arrow; sagittal (directional term)
  299. salta-
    leap; saltatory conduction, the rapid conduction of impulses along myelinated neurons
  300. sanguin-
    blood; consanguineous, indicative of genetic relationship between individuals
  301. sacro-
    flesh; sarcomere, unit of contraction in skeletal muscle
  302. saphen-
    visible, clear; great saphenous vein, superficial vein of the thigh and leg
  303. sclero-
    hard; sclerodermatitis, inflammatory thickening and hardening of the skin
  304. seb-
    grease; sebum, the oil of the skin
  305. semen
    seed, sperm; semen, the discharge of the male reproductive system
  306. semi-
    half; semicircular, having the form of a half circle
  307. sens-
    feeling; sensation, sensory
  308. septi-
    rotten; sepsis, infection, antiseptic
  309. septum
    fence; nasal septum
  310. sero-
    serum; serological tests, which assess blood conditions
  311. serrat-
    saw; serratus anterior, a muscle of the chest wall that has a jagged edge
  312. sin-, sino-
    a hollow; sinuses of the skull
  313. soma-
    body; somatic nervous system
  314. somn-
    sleep; insomnia, inability to sleep
  315. sphin-
    squeeze; sphincter
  316. splanchn-
    organ; splanchnic nerve, autonomic supply to abdominal viscera
  317. spondyl-
    vertebra; ankylosing spondylitis, rheumatoid arthritis affecting the spine
  318. squam-
    scale, flat; squamous epithelium, squamous suture of the skull
  319. steno-
    narrow; stenocoriasis, narrowing of the pupil
  320. strat-
    layer; strata of the epidermis, stratified epithelium
  321. stria-
    furrow, streak; striations of skeletal and cardiac muscle tissue
  322. stroma
    spread out; stroma, the connective tissue framework of some organs
  323. sub-
    beneath, under; sublingual, beneath the tongue
  324. sucr-
    sweet; sucrose, table sugar
  325. sudor-
    sweat; sudoriferous glands, the sweat glands
  326. super-
    above, upon; superior, quality or state of being above others or a part
  327. supra-
    above, upon; supracondylar, above a condyle
  328. sym-, syn-
    together, with; synapse, the region of communication between two neurons
  329. synerg-
    work together; synergism
  330. systol-
    contraction; systole, contraction of the heart
  331. tachy-
    rapid; tachycardia, abnormally rapid heartbeat
  332. tact-
    touch; tactile sense
  333. telo-
    the end; telophase, the end of mitosis
  334. templ-, tempo-
    time; temporal summation of nerve impulses
  335. tens-
    stretched; muscle tension
  336. terti-
    third; fibularis tertius, one of three fibularis muscles
  337. tetan-
    rigid, tense; tetanus of muscles
  338. therm-
    heat; thermometer, an instrucment used to measure heat
  339. thromb-
    clot; thrombocyte, thrombus
  340. thyro-
    a shield; thyroid gland
  341. tissu-
    woven; tussue
  342. tono-
    tension; tonicity, hypertonic
  343. tox-
    poison; toxicology, study of poisons
  344. trab-
    beam, timber; trabeculae, spicules of bone in spongy bone tissue
  345. trans-
    across, through; transpleural, through the pleura
  346. trapez-
    table; trapezius, the four-sided muscle of the upper back
  347. tri-
    three; trifurcation, division into three branches
  348. trop-
    turn, change; tropic hormones, whose targets are endocrine glands
  349. troph-
    nourish; trophoblast, from which develops the fetal portion of the placenta
  350. tuber-
    swelling; tuberosity, a bump on a bone
  351. tunic-
    covering; tunica albuginea, the covering of the testis
  352. tympan-
    drum; tympanic membrane, the eardrum
  353. ultra-
    beyond; ultraviolet radiation, beyond the band of visible light
  354. vacc-
    cow; vaccine
  355. vagin-
    a sheath; vagina
  356. vagus
    wanderer; the vagus nerve, which starts at the brain and travels into the abdominopelvic cavity
  357. valen-
    strength; valence shells of atoms
  358. venter, ventr-
    abdomen, belly; ventral (directional term), ventricle
  359. vent-
    the wind; pulmonary ventilation
  360. vert-
    turn; vertebral column
  361. vestibul-
    a porch; vestibule, the anterior entryway to the mouth and nose
  362. vibr-
    shake, quiver; vibrissae, hairs of the nasal vestibule
  363. villus
    shaggy hair; microvilli, which have the appearance of hair in light microscopy
  364. viscero-
    organ, viscera; visceroinhibitory, inhibiting the movements of the viscera
  365. viscos-
    sticky; viscosity, resistance to flow
  366. vita-
    life; vitamin
  367. vitre-
    glass; vitreous humor, the clear jelly of the eye
  368. viv-
    live; in vivo
  369. vulv-
    a covering; vulva, the female external genitalia
  370. zyg-
    a yoke, twin; zygote
  371. -able
    able to, capable of; viable, ability to live or exist
  372. -ac
    referring to; cardiac, referring to the heart
  373. -algia
    pain in a certain part; neuralgia, pain along the course of a nerve
  374. -apsi
    juncture; synapse, where two neurons communicate
  375. -ary
    associated with, relating to; coronary, associated with the heart
  376. -asthen
    weakness; myasthenia gravis, a disease involving paralysis
  377. -bryo
    swollen; embryo
  378. -cide
    destroy or kill; germicide, an agent that kills germs
  379. -cipit
    head; occipital
  380. -clast
    break; osteoclast, a cell that dissolves bone matrix
  381. -crine
    separate; endocrine organs, which secrete hormones into the blood
  382. -dips
    thirst, dry; polydipsia, excessive thirst associated with diabetes
  383. -ectomy
    cutting out, surgical removal; appendectomy, cutting out of the appendix
  384. -ell, -elle
    small; organelle
  385. -emia
    condition of the blood; anemia, deficiency of red blood cells
  386. -esthesi
    sensation; anesthesia, lack of sensation
  387. -ferent
    carry; efferent nerves, nerves carrying impulses away from the CNS
  388. -form, -forma
    shape; cribriform plate of the ethmoid bone
  389. -fuge
    driving out; vermifuge, a substance that expels worms of the intestine
  390. -gen
    an agent that initiates; pathogen, any agent that produces disease
  391. -glea, -glia
    glue; neuroglia, the connective tissue of the nervous system
  392. -gram
    data that are systematically recorded, a record; electrocardiogram, a recording showing action of the heart
  393. -graph
    an instrument used for recording data or writing; electrocardiograph, an instrument used to make an electrocardiogram
  394. -ia
    condition; insomnia, condidion of not being able to sleep
  395. -iatrics
    medical specialty; geriatrics, the branch of medicine dealing with disease associated with old age
  396. -ism
    condition; hyperthyroidism
  397. -itis
    inflammation; gastritis, inflammation of the stomach
  398. -lemma
    sheath, husk; sarcolemma, the plasma membrane of a muscle cell
  399. -logy
    the study of; pathology, the study of changes in structure and structure and function brough on by disease
  400. -lysis
    loosening or breaking down; hydrolysis, chemical decomposition of a compound into other compounds as a result of taking up water
  401. -malacia
    soft; osteomalacia, a process leading to bone softening
  402. -mania
    obsession, compulsion; erotomania, exaggeration of the sexual passions
  403. -nata
    birth; prenatal development
  404. -nom
    govern; autonomic nervous system
  405. -odyn
    pain; coccygodynia, pain in the region of the coccyx
  406. -oid
    like, resembling; cuboid, shaped as a cube
  407. -oma
    tumor; lymphoma, a tumor of the lymphatic tissues
  408. -opia
    defect of the eye; myopia, nearsightedness
  409. -ory
    referring to, of; audiroty, referring to hearing
  410. -pathy
    disease; osteopathy, any disease of bone
  411. -phasia
    speech; aphasia, lack of ability to speak
  412. -phil, -philo
    like, love; hydrophilic, water-attracting molecules
  413. -phobia
    fear; acrophobia, fear of heights
  414. -phragm
    partition; diaphragm, which separates the thoracic and abdominal cavities
  415. -phylax
    guard, preserve; prophylaxis, to guard in advance, as in preventive treatment
  416. -plas
    grow; neoplasia, an abnormal growth
  417. -plasm
    form, shape; cytoplasm
  418. -plasty
    reconstruction of a part, plastic surgery; rhinoplasty, reconstruction of the nose through surgery
  419. -plegia
    paralysis; paraplagia, paralysis of the lower half of the body or lower limbs
  420. -rrhagia
    abnormal or excessive discharge; metrorrhagia, uterine hemorrhage
  421. -rrhea
    flow or discharge; diarrhea, abnormal emptying of the bowels
  422. -scope
    instrument used for examination; stethoscope, instrument used to listen to sounds of parts of the body
  423. -some
    body; chromosome
  424. -sorb
    suck in; absorb
  425. -stalsis
    compression; peristalsis, muscular contractions that propel food along the digestive tract
  426. -stasis
    arrest, fixation; hemostasis, arrest of bleeding
  427. -stitia
    come to stand; interstitial fluid, between the cells
  428. -stomy
    establishment of an artificial opening; enterostomy, the formation of an artificial opening into the intestine through the abdominal wall
  429. -tegm
    cover; integument
  430. -tomy
    to cut; appendectomy, surgical removal of the appendix
  431. -trud
    thrust; protrude, detrusor muscle
  432. -ty
    condition of, state; immunity, condition of being resistant to infection or disease
  433. -uria
    urine; polyuria, passage of an excessive amount of urine
  434. -zyme
    ferment; enzyme
Card Set
BIO Word Roots Davis
Word Roots from BIO 210 and 211 Book