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48 Cards in this Set
- Front
- Back
Receptors
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detect change and generate impulses
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Sensory Neurons
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transmit impulses form receptors to CNS
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Sensory tracts
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White matter in the CNS
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Sensory Area
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Most in cerebral cortex
Fells & interprets the sensation |
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Intensity
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degree to which a sensation is felt
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Contrast
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effect of a previous or simultanious sensation on a current sensation as the brain compares them.
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Adaptaion
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becoming unaware of a continuing stimulus
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After-Image
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sensation remains in the consciousness after the stimulus has stopped.
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Location of sensory areas
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Parietal lobes
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Referred pain
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Visceral pain felt as cutaneous pain
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What sensations are in the dermis
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Free nerve endings:pain,heat,cold
Encapsulated nerve endings:touch, pressure |
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Function of Streach receptors in Muscles
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detect streaching
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Location of sensory areas for Conscious muscle sense
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Parietal Lobes
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_______ uses unconsious muscle sense to coordinate voluntary movement
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Cerebellum
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location of Chemoreceptors
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taste buds on tongue
upper nasal cavity |
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Function of chemoreceptors
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detect food in saliva in mouth/
detect vaporized chemicals |
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Four basic tastes
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sweet, sour, salty, bitter
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Location of receptors for Hunger
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Hypothalamus
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Function of receptors for hunger
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detect changes in GI hormones and nutrient levels in the blood
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Location of receptors for thirst
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Hypothalamus
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Function of receptors for thirst
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detect changes in body water
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eyelid and Eyelash function
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keep dust out of eyes
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Lacrimal gland function
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produce tears
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What protects Eyeball
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bony orbit (socket)
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how many muscles move the eyeball
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six muscles
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outermost layer of the eyeball
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sclera
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What is sclera made of
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fibrous connective tissue
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where is Choroid layer
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middle layer of eyeball
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Ciliary body and suispensory ligaments Function
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changes shape of lens
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what is Ciliary body and suispensory ligaments made of
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a transparent, elastic protein
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Iris function
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regulate diameter of Pupil, how much light strikes the retina
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Reina location
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innermost layer of eyeball, contains rods and cones
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Rods function
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detect light
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function of Cones
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detect color
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Vitreous Humor function
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keeps retina in place
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aqueous humor function
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nourishes the lens and cornea
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Outer ear function
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NONE
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Middle Ear location
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eardrum at end of ear canal
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Middle Ear function
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vibrates when sound waves strike it
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Auditory bones
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malleus, stapes, incus
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Auditory bones function
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transmit vibrations to inner ear
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Eustachian tube Function
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allows air in and out of middle ear to permit eardrum to vibrate
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Inner Ear
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bony labyrinth in temporal bone
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Membraneous structures
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cochlea, utricle, saccule, & seicircular canals
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Cochlea
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snail-shaped, 3 internal canals, contains receptors for hearing
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Utricle & Saccule
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membranous sacs in the vestibule
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Semicircular canals
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3 membraneous ovals in 3 planes
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Aortic Arch
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aortic body contains chemoreceptors
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