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special senses review
Question | Answer |
---|---|
Describe aqueous humor | -found in the anterior and posterior chambers -provides nourishment for the lens & cornea -drains from eye by a small hole, canal of schlemm -produced by ciliary body |
Describe cones | -function in bright light -produces colour vision |
describe rods | -function in dim light -produces black and white vision |
Describe conjunctiva | -lines the inner surface of the eyelids & cornea and the outer layer of the eyeball |
describe fovea | -the center of the macula -light rays from an object are directed to the fovea -only cones -provides greatest acuity |
describe pupil | coloured contractile membrane perforated center is the iris |
Describe the vestibular system | -the function is control of balance & eye movements -consists of semicircular canals -responsible for maintaining both static and dynamic equilibrium -vestibule (joins cochlea & semicircular canals |
Describe vitreous humor | -jellylike substance that fills the interior of the eye - vitreous chamber -refractive structures of the eye |
What are the function of the ear | -sense receptor organ for hearing & equilibrium -hearing is a function of the cochlea -equilibrium is a function of semicircular canals & vestibule |
What are the 3 tunics of the eye | fibrous tunic vascular tunic sensory tunic |
What is an otolaryngologist | a physician taht treats disorders, treats ears nose throat (ENT) many employ audiologist |
what are the specific sensations | vision smell taste hearing equilibrium |
What is macular degeneration | detoriation of the macula responsible for central vision most common is age related macular degeneration |
What is otosclerosis | disorder characterized by ankylosis of he ossciles most commonly affected is the stapes |
Where are the ossciles located | middle ear |