bio chap9

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Author:
nissansarebetter88
ID:
144193
Filename:
bio chap9
Updated:
2012-03-27 13:42:35
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bio chap
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Description:
chap 9 senses
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  1. what parts of the nervous system are involved in the development of a sensation
    the sensory receptpr sends impuls to rhe central nervous system which carries the impulse to the cerebral cortex
  2. what sensory receptors are located within the skin
    heat and cold receptors and touch receptors
  3. where are taste and olfactory receptors located
    • taste are located in tastebuds on the tounge.
    • olfactory- located in the upper portion of the nasal cavity
  4. how are the four basic taste sensations produced
    four types of taste receptors sweet bitter salty and sour.
  5. what strucures are invloved in static and dynamic equilibrim
    • static- the macula located in the utricle and the saccule.
    • dynamic- crista ampullaris
  6. what are the functions of the accessory structures of the eye
    • eyelids- spread tears to keep it moist
    • eyelashes help keep things out of your eye
    • eyebrows- shield the eye from light above.
  7. how are light rays converted into visual sensations
    light rays ar bent, light absorbed by the rods creates nerve impluses. impulses are carried to the vision center in the optical lobes of the cerebrum
  8. 2 types of touch meissners corpuscles, free nerve endings
    pain orginating refered pain
    receptors for taste taste buds
    epithelim of upper nasal cavity olfactory
    decline in impulse accommodation
    cochlea of inner ear hearing, equilibrum
    membranous labyringth endolymph
    receptors for hearing corti,basilar
    vibrations of eardrum ear ossicles
    haircell receptors saccule, utricle
    light ray enter eyes cornea, lens
    fovea centralis cones,color
    muscles ciliary body
    the retna is pressed vitreous humor
    the medial fibers optic chasam

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