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What are the two substances found in the epidermis
keratin and melanin
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is a protein found in the stratum corneum layer that makes the epidermis tough and impenetrable
Keratin
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receptors that respond to mechanical pressure located at the ends of neurons to detect deep pressure and vibrations
Mechanoreceptors
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what are the 3 main types of glands within the integumentary system
- sebaceous glands
- sudoriferous glands
- ceruminous glands
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what are the two main types of sudoriferous glands
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glands that secrete ear wax (cerumen)
ceruminous glands
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Individual bone cells
osteocytes
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cells that build up or repair bone tissue
osteoblasts
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cells that break down bone tissue and help release stored minerals
osteoclasts
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How many bones are in the human body?
- 206
- 80- axial
- 126 appendicular skeleton
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Fibers arrange concentrically around an opening
Functions as sphincter to close a passageway or opening. What type of pattern of muscle is this?
circular
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triangular muscle with common attachment site
direction of pull can be changed
does not pull as hard as an equal-sized parallel muscle. what is the pattern of muscle?
convergent
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fascicles are parallel to the long axis of the muscle. The body of the muscle increases in diameter with contraction. It is a high endurance muscle. but is not very strong. Name this pattern of muscle?
parallel
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name the muscle pattern where the muscle body has one or more tendons;
the fascicles are at an oblique angle to the tendon.
pennate
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This type of muscle pattern fiber on the same side of the tendon
unipennate
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these have muscle fibers on bonth sides of the tendon
bipennate
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these muscles have tendons that branch within the muscle
multipennate
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a theory that explains muscular contractions. It states that if there is enough ATP, the myosin will attach to the actin and make the actin "slide" over each other, thus pulling the muscle fibers toward the center
sliding filament theory
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tendons attach muscle to
bone
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thick myofilaments
myosin
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one motor neuron, neuro muscular junctions, and the muscle fibers it innervates
motor unit
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The brain consists of 4 main parts: They are
- cerebrum
- cerebellum
- diencephalon
- brain stem
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3 layers that surround and protect the CNS are called
meninges
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the thickest and most external layer of the the meninges
dura mater
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the web-like and provides space for the cerebrospinal fluid to circulate and cushion support of the meninges is the
arachnoid layer
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the softer layer and innermost layer of the meninges and is the layer that has vascular and supplies nutrients to the brain
pia mater layer
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this is the superior part of the brain, making up 81% of the total brain mass.
cerebrum
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which side of the cerebrum is creativity and contains the sensory and motor pathways for the left side of body
right hemisphere
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which side of the cerebrum is logic, science, languages, and verbal ideas, contains sensory and motor pathways for the right side of the body
left hemisphere
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this part of the brain controls muscle tone, coordinates skeletal muscles and balance, and controls fine and gross motor movements
cerebellum
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provides the relay and switching cneters for some sensory and motor pathways and for control of visceral activities. contains thalamus and hypothalamus
diencephalon
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contains 3 part midbrain, pons, and medulla oblongata
brainstem
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this area of the brain is responsible for visual and auditory reflexes
midbrain
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this section of the brain stem is the center for autonomic respiration and acts as a bridge from the spine the rest of the brain.
pons
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this area is the cardiac control center, vasomotor center, and respiratory center
medulla oblongata
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the PNS contains all other nerves except
the brain and spinal cord (cranial nerves and spinal nerves)
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the part of the peripheral nervous system that controls skeletal muscles and their contractions
somatic nervous system
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PNS that controls smooth muscle, cardiac muscles, internal organs and glands
autonomic nervous system
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name the cranial nerves
- OH-------olfactory
- OH-------optic
- Oh-------oculomotor
- TO-------trochlear
- Touch----Trigeminal
- AND------abducens
- Feel------facial
- Very------vestibulochochlear
- Good-----glossophayngeal
- Vagina---Vagus
- Ah--------accessory
- Ha---------hypoglossal
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this is the smallest of the cranial nerves. its sensory and motor fibers supply the superior oblique muscles for oblique eye movements
trochlear iv
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this is the largest of the cranial nerves. supplies the tissues of the face, eyes, nasal cavity, and mouth. sensory fibers conduct impulses for touch, heat , cold, and pain
trigeminal v
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the sensory and motor fibers of this nerve supply the lateral rectus muscles for lateral eye movements
abducens nerve vi
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this nerve supplies most of the visceral organs in the thoracic and abdominopelvic cavity
vagus nerve x
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motor fibers supply the SCM, traps, and swallowing muscles
Accessory xi
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motor fibers supply muscles of the tongue
hypoglossal nerve xiii
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helps our body protect itself from over-stretching.
muscle spindles
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helps us from over contracting by sending signals to the inter neurons in spinal cord
gogli tendon organs
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quick, involuntary response to a stimulus. like blinking, breathing and salivation
reflex arc
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produces hormone melatonin
pineal gland
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secrets two hormones: thyroxin and thyrocalcitonin
thyroid gland
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decreases the level of calcium ions in the blood by causing the calcium to be absorbed by bone
thyrocalcitonin
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this is a condition in which there is a lack of thyroxin in the blood . in growth years results in mental retardation. after growth years, results in low metabolic rate, depression, fatigue, weight gain.
hypothyroidism
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condition characterized by irritability, weight loss, enlarged thyroid gland and bulging eyes
hyperthyroidism
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increases blood calcium by causing he release of calcium from bone
parathyroid gland
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smallest veins that lead from capillaries to veins
venules
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microscopic blood vessels where the exchange of oxygen and other nutrients into the tissue takes place
capillaries
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what are the 4 large blood vessels the supply the heart
- superior vena cava
- inferior vena cava
- pulmonary artery
- pulmonary veins
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what are the 2 main veins that collect blood from the body and channel it to the heart
superior and inferior vena cava
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the large blood vessel that channels blood away form the heart to the lungs carry deoxygenated blood is the
pulmonary artery
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the large blood vessel that channel blood from the lungs to the heart
pulmonary veins
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what are the 4 valves that keep blood flowing in the proper direction through the heart
- right AV valve (aka: tricuspid valve)
- left AV valve (aka: bicuspid valve)
- pulmonary semilunar valve
- aortic semilunar valve
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valve situated between the right ventricle and the pulmonary artery
pulmonary semilunar valve
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valve situated between the left ventricle and the aorta
aortic semilunar valve
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cardiac blood flow
- R heart gets old oxygen blood from body gives to lungs.
- L heart gets new oxygen blood gives to body
- deoygenated blood goes from body to vena cavas into right atrium
- from AV valve to R ventricle, through
- pulmonary artery to lungs
- oxygenated blood from lungs through pulmonary veins to left atrium, through mitral valve, into left ventricle to aorta from aorta to body.
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circulation of the blood from heart to lungs and back to heart
pulmonary circulation
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from heart to the rest of the body and back
systemic circulation
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main veins that return blood to the heart
vena cavas
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the artery leading form the right ventricle of the heart to the lungs
pulmonary artery
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returns blood from the lungs to the left atrium of the heart
pulmonary vein
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valve between right atrium and right ventricle
tricuspid or R AV valve
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valve between the left atrium and left ventricle
mitral or bicuspid or aka Left AV valve
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valve between the left ventricle and aorta
aortic semilunar vlave
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pulmonary circulation
- vena cava
- R Atrium
- Tricuspid valve
- R ventricle
- pulmonary semilunar valve
- pulmonary artery
- lungs
- pulmonary vein
- left atrium
- bicuspid
- left ventricle
- aortic semi-lunar valve
- aorta
- body
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systemic circulation
- aorta
- arteries
- arterioles
- capillaries
- venules
- veins
- vena
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this condition is due to calcium deposits on the walls of arteries
arteriosclerosis
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condition in which fatty material becomes deposited on the walls of arteries
atherosclerosis
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recognize antigens and attack foreign cells to reduce threats by pathogens
t lymphocytes
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contain antigen receptors that respond to one particular antigen and cause the production of antibodies to respond to that particular antigen
b lymphocytes
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kills wide variety of infected or cancerous cells and respond to multiple antigens
natural killers cells
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located at the very back of nose at hte nasopharynx. provides defense against inhaled substances.
adenoids
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these are small lymphatic organs located in the back of throat there are 3 name them.
- tonsils:
- pharyngeal
- palatine
- lingual
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organ located just under the diaphragm posterior and lateral to the stomach. contains macrophages that engulf worn out blood cells and bacteria.
spleen
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urine formation
- glomerular filtration
- tubular reabsorption
- tubular secretion
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filtration of fluid out of capillaries and into the nephron. What is this called and The driving force for this process is what
- glomerular filtraiton
- blood pressure
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is the reabsorption of chemicals from the nephron back to the blood
tubular reabsorption
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tubes that transfer urine from the kidneys to the bladder
ureters
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canal that allows for transfer of urine from the bladder for excretion
urethra
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what are the 3 processes of respiration
- ventilation
- external respiration
- internal respiration
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normal amount of air inhaled and exhaled in quiet breathing at 500ml
tidal volume
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maximum volume of air inhaled and exhaled forced breathing which is about 5000ml
vital capacity
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the exchange of gases getween the alveoli and the blood is
external respiration
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the exchange of gases between the blood and the body cells is
internal respiration
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name the upper, middle, and lower portion of the stomach
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organ the have pockets of endocrine cells called the islets of langerhans produce glucagons and insulin hormones that regulate blood sugar levels and aids in digestion of fats and proteins
pancreas
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Gonads
- male and female reproductive organs
- ovaries and testes
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a cell with half the number of chromosomes.
gamete
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mature male gamete that develops in the seminiferous tubules of the testes
spermatozoan
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saclike accessory glands located posterior to the urinary bladder in the male that provide nourishment for sperm
seminal vesicle
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