Special Senses: Vision

Question 1

primary areas of fluid filled chambers

Answer 1

anterior & posterior

Question 2

the 2 primary fluid filled chambers are filled with what

Answer 2

Aqueous humor

Question 3

name of chamber behind the lens

Answer 3

vitreous

Question 4

vitreous chamber is filled with what

Answer 4

vitreous humor

Question 5

cornea does what?

Answer 5

focuses

Question 6

retina does what?

Answer 6

converts a visual image into nerve action potentials

Question 7

retina has how many neuron layers

Answer 7

7-10

Question 8

Transduction is accomplished by what part of the eye

Answer 8

photoreceptors

Question 9

pigment that can be alter very rapidly by light to generate depolarization or hyperpolarization of a nerve cell membrane

Answer 9

photoreceptors

Question 10

types of photoreceptors

Answer 10

cones & rods

Question 11

Different pigments that are sensitive to different frequencies of light

Answer 11

cones

Question 12

what colors does cones have?

Answer 12

blue, red, & green

Question 13

Cones are most numerous in

Answer 13

the fovea

Question 14

Highly sensitive to dim light (night vision)

Answer 14

rods

Question 15

insufficient amount of what vitamine can cause night blindness

Answer 15

vitamine A

Question 16

primary area where visual images are focused

Answer 16

fovea

Question 17

what surrounds the macula

Answer 17

fovea

Question 18

blind spot of the visual field

Answer 18

optic disc

Question 19

Depth perception

Answer 19

binocular vision

Question 20

lesion at the optic nerve on one side or 1 complete eye losses of vision is what?

Answer 20

Monocular Blindness

Question 21

lesion at the optic chiasm or loss of 1 visual field loss is what?

Answer 21

Bitemporal Hemianopia

Question 22

lesion at the optic tract or 1 full visual field is loss is what?

Answer 22

Homonymous Hemianopia

Question 23

O.S is what?

Answer 23

visual field of the left eye

Question 24

O.D is what?

Answer 24

visual field of the right eye

Question 25

if there is a lesion in the optic pathway will one demonstrate pupillary light reflex?

Answer 25

no

Question 26

as long as the optic pathway is intact what will happen with the pupillary light reflex?

Answer 26

the reflex will still occur since it crosses bilaterally in the pretectum nucleus

Question 27

Pupillary dilation is under the control of

Answer 27

sympathetic nervous system