exam 1 sem 2

Question 1

total refractive power of the human eye is about which of the following?

Answer 1

60

Question 2

True or False: Spacial summation increased is tramsmitted by using progressively greater numbers of fibers

Answer 2

true

Question 3

an eyeball that is too short will cause the light that is coming from different objects to be focused behind the retina; this condition is referred to as?

Answer 3

hypertropia

Question 4

Light photon will cause on the retina will cause rhodopsin to dissociate into scotopsin and what?

Answer 4

all-trans retinal

Question 5

rod cGMP sodium gated closure by phosphodiesterase is activated by what?

Answer 5

Transducin

Question 6

which of the following neurotranmitters secreted by cerebral cortex is always excitatory

Answer 6

Glutamate

Question 7

This signal pathway of the visual cortex received input from optic nerve .

Answer 7

lateral geniculate nucleus

Question 8

This principle states the the nervous system detects sound frequencies by determining positions along the basilar membrane that are most stimulates

Answer 8

Place Principle

Question 9

Decribe how hair fibers arranged along the basilar membrane form the oval window to the cochlea

Answer 9

stiff short fibers near the oval window, and long limber fibers near the apex of the cochlea

Question 10

what is the function of the auditory muscles?

Answer 10

contract to dampen the vibrations