Core Special Senses

Question 1

refracts light

Answer 1

cornea and lens

Question 2

cornea blood supply

Answer 2

does not have one gets oxygen from air

Question 3

forms middle layer of eye

Answer 3

choroid and uveal tract

Question 4

contains visual receptors rods and cons

Answer 4

retina

Question 5

optic disc

Answer 5

has no visual receptors blind spot area where optic nerve leaves the eye and blood vessels enter it

Question 6

area with highest visual acuity contains cons only

Answer 6

macula

Question 7

sympathetic stimulation of muscles of iris

Answer 7

dilator pupil is causes pupillary response to sympathetic stimulation

Question 8

parasympathetic stimulation of muscles of iris

Answer 8

sphincter pupil pupillary constriction parasympathetic stimulation

Question 9

dark vision

Answer 9

rods 120 million in each eye

Question 10

day vision and color

Answer 10

cones 6 million in each eye

Question 11

Is ration b/w the velocity of light @ air and velocity of light @ transparent medium

Answer 11

refractory index

Question 12

refraction is

Answer 12

bending of light rays at angulated interface