Term
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Definition
| free nerve ending, encapsulated nerve endings, separate cells |
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Term
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Definition
| bare dendrite that detects pain, thermal changes, tickle and itch |
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Term
| encapsulated nerve endings |
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Definition
dendrites enclosed in connective tissue
touch, pressure and vibration |
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Term
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Definition
have a synapse with sensory neurons that generate AP
vision, hearing, taste, olfaction |
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Term
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Definition
| only determines contact with skin |
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Term
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Definition
determines where, how big, what is is on the skin
meissner's corpuscles, root hair plexus, merkel disks
ruffini corpuscles, lamellated or pacinian corpuscles |
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Term
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Definition
found in dermal papillae
fast acting
40% of receptor in hands |
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Term
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Definition
| free nerve ending wrapped around hair follicle |
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Term
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Definition
free nerve endings located in stratum basale
25% of touch in hands |
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Term
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Definition
stretch receptor in deep dermis, tendon and ligaments
20% of receptor in hands |
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Term
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Definition
mechanoreceptors that detect pressure
in skin, muscles, joint capsules and other areas |
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Term
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Definition
in stratum basale
between 50 and 105F |
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Term
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Definition
located in dermis
activated between 90 and 118F |
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Term
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Definition
| respond to chemicals dissolved in aqueos solution |
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Term
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Definition
| trigger reflexes for digestion, secretion of saliva |
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Term
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Definition
found in papillae of tongue, throat larynx
has taste receptor cells, supporting cells, and basal cells |
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Term
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Definition
50 cells that live 10 days
each cell has a hair that projects through a pore in taste bud |
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Term
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Definition
| forms a capsule around receptor cell |
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Term
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Definition
| found at base of taste bud, develops into receptor cell |
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Term
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Definition
| chemical contacts receptor and causes transduction and release of neurotransmitter |
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Term
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Definition
10 million receptor cells
located in roof of nasal cavity
olfactory receptor cells, supporting cells, and basal cells |
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Term
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Definition
bipolar neuron
olfactory hair projects from dendrite |
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Term
| supporting cell (olfactory) |
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Definition
| columnar epithelial cells |
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Term
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Definition
found at base of epithelium
develops into receptor cells |
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Term
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Definition
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Term
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Definition
divided into anterior and posterior by lens
interior has aqueous humor, posterior has vitreous humor
three layers: fibrous tunic, vascular tunic, sensory tunic |
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Term
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Definition
dense avascular connective tissue
sclera, cornea |
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Term
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Definition
white of the eye
tough and protective
anchors eye muscles |
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Term
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Definition
anterior portion of fibrous tunic
transparent and has nerve endings for pain
lacks blood vessels |
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Term
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Definition
pigmented, contains blood vessels
three regions: choroid, ciliary body, iris, lens |
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Term
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Definition
posterior portion
highly pigmented to absorb light |
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Term
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Definition
thickened ring of tissue
smooth muscle that controls shape of lens |
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Term
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Definition
colored part of the eye
composed of muscle that controls size of pupil |
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Term
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Definition
biconvex, transparent flexible, focuses light
suspended from the ciliary body |
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Term
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Definition
has millions of photoreceptors
ganglion, bipolar, and photoreceptor layers |
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Term
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Definition
outer surface of retina
sends impulse to brain |
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Term
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Definition
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Term
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Definition
| absorbs light and transduces it |
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Term
| accommodation of the lens to light |
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Definition
bends more when viewing close objects, less for far obeject.
autonomic reflex by ciliary muscle |
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Term
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Definition
| makes sure that the light strikes the same place on each retina |
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Term
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Definition
photoreceptors are stimulated by light
transduces into AP
photoreceptors undergo a change in shape when struck by light.
pass potential to bipolar then to ganglion to thalamus |
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Term
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Definition
| takes 60-120ms for reflex |
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Term
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Definition
two divisions
bony and membranous labyrinth |
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Term
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Definition
contains semicircular canals with balance
cochlea-hearing receptor
vestibule-balance recepotrs |
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Term
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Definition
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Term
| physiology of equilibrium |
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Definition
| static and dynamic equilibrium |
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Term
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Definition
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Term
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Definition
receptors for static equilibrium
some for dynamic |
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Term
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Definition
| dynamic equilibrium receptors |
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