Ch18 Special senses

  1. Somatic senses
    touch, temperature, muscle spindles; general senses
  2. Visceral senses
    from organs
  3. Special senses define
    specialized receptors, only in head, cranial nerves to special centers in brain
  4. Special senses (name)
    taste, smell, vision, hearing, equilibrium
  5. Papillae
    bumps on tongue
  6. fungiform
    contain taste buds on apical surface
  7. circumvallate
    contain taste buds on the sides
  8. taste buds
    sensory epithelia within the papillae
  9. Gustatory cells
    aka hair cells; receptor cells
  10. Supporting cells
    cells in taste buds
  11. Basal cells
    in tastebuds
  12. Olfactory nerve
    bipolar sells, contains supporting and basal cells
  13. Mitral cells
    cells of olfactory sense
  14. olfactory tract
    axons of mitral cells
  15. Tarsal plates
  16. Levator palpebrae superioris
    lifts eyelid
  17. orbicularis oculi
    muscle around eye
  18. Medial and lateral canthus
    clean-up crew
  19. lacrimal caruncle
    tears flow into it
  20. Tarsal glands
    oil glands, lube eyelid
  21. Conjuctiva
    transparent membrane lines paplebrae and covers sclera, contains conjuctival sac
  22. lacrimal apparatus
    lacrimal gland > lacrimal punctum, canaliculus > lacrimal sac > nasolacrimal duct
  23. Superior rectus is controlled by (nerve)
    CN III
  24. Inferior Rectus controlled by
    CN III
  25. Medial rectus controlled by
    CN III
  26. Lateral rectus controlled by
    CN VI
  27. Superior oblique controlled by
    CN IV
  28. Inferior oblique controlled by
    CN III
  29. Outer layer of eyeball
    sclera + corna
  30. Middle layer of eyeball
  31. Inner layer of eyeball
  32. Dilator pupillae
    dilate pupil
  33. sphincter pupillae
    constrict pupil
  34. Ciliary muscles
    control the lens
  35. Lens
    focuses light into retina, made of elastic c.t.
  36. cataracts
    cloudy lens
  37. Vascular Tunic
    the choroid of the eyeball, contains blood vessels and melanin.
  38. Ciliary process
    produces aqueous humor
  39. ciliary muscle
    controls lens thickness
  40. ciliary zonule
    suspensory ligaments for the lens
  41. Retina
    part of sensory tunic
  42. optic disk
    optic nerve exit through retina
  43. Macula lutea
    central area of retina, mostly cones, best vision
  44. Fovea centralis
    center of macula, only cones, focal spot
  45. Vitreous humor
    holds retina in place, part of the posterior cavity
  46. Aqueous humor
    nutrients for lens and cornea, made by ciliary processes
  47. Scleral venous sinus
    Drains aqueous humor, aka canal of Schlemm
  48. Visual pathway
    Optic nerve > optic chiasm > optic tract > thalamus > optic radiation
  49. Optic nerve
    axons of ganglionic cells, through optic foramen
  50. Optic chiasm
    cross of medial fibers of optic nerves
  51. Optic tract
    located in the brain
  52. Thalamus visual pathway
    through lateral geniculuate nucleus
  53. Optic radiation
    axons to occipital cortex
  54. Superior colliculi
    reflex movt of eye muscles
  55. Hypothalamus relating to vision
    sleep cycles
  56. Ear parts
    external ear, middle ear, inner ear
  57. Auricle
    outside ear
  58. Tympanic membrane
  59. Ossicles
    middle ear bones, increase vibration
  60. Malleus
    1st bone of the middle ear, contacts tympanic membrane
  61. Incus
    2nd bone of the middle ear
  62. Stapes
    3rd bone, contacts oval window in middle ear
  63. Medial wall
    Oval window and round window, contacts inner ear in the middle ear
  64. Pharyngotympanic tube
    connects to nasopharynx
  65. Cochlea
    hearing in the inner ear
  66. Vestibule and semicircular canals
    equilibrium in the inner ear
  67. Cochlear duct
    spiral membrane w/in cochlea, filled with endolymph and contains Organ of Corti
  68. Endolymph
    fluid inside of cochlea
  69. Organ of Corti
    receptor membrane inside of cochlear duct
  70. Scala vestibuli
    vestibular duct, next to vestibular membrane
  71. Scala tympani
    tympanic duct, next to basilar membrane
  72. Sterocilia
    receptor cells contacting tectorial membrane in Organ of COrti
  73. Cochlear nerve
    VIII to brain
  74. Vestibule
    linear movements, static equilibrium (vs gravity)
  75. Semicircular canals
    rotational movements, dynamic equilibrium
  76. Utricle
    horizontal motions in the vestibule
  77. Saccule
    verticle motions in the vestibule
  78. Macula
    Sensory epithelium in the vestibule
  79. Hair cells of the vestibule
    receptor cells
  80. Otoliths
    calcium crystals in the vestibule
  81. Ampula
    sac at base of each duct in the semicircular canals
  82. Crista ampullaris
    cells within ampulla
  83. Cupula
    gel covering hair cells in the semicircular canals
Card Set
Ch18 Special senses
ayaz learns anatomy