visual system

Question 1

rods contain the pigment ____

Answer 1

rhodopsin

Question 2

acuity

Answer 2

resolution

Question 3

our photo receptors (rods) can detect ____ photons

Answer 3

single

Question 4

color vision

Answer 4

cones

Question 5

moonlight receptors

Answer 5

rods

Question 6

wavelength spectrum of visible light

Answer 6

400 - 700 nm

Question 7

photoreceptors transduce _______ into neural signals

Answer 7

light energy

Question 8

the optic nerve is made up of ________ cell axons bundled together

Answer 8

retinal ganglion

Question 9

photoreceptors are _____ in the dark

Answer 9

depolarized

Question 10

photoreceptors are _____ in the light

Answer 10

hyper polarized

Question 11

_____ release from the presynaptic terminal decreases in the presence of light

Answer 11

glutamate

Question 12

speed of photon transmission

Answer 12

very slow since one can be detected and activate the cascade of channels

Question 13

papilledema

Answer 13

swollen appearance of the optic disc

Question 14

rods are located in the

Answer 14

peripheral retina

Question 15

rods mediate ___ acuity vision

Answer 15

low

Question 16

cones mediate ___ acuity vision

Answer 16

high

Question 17

daylight receptors

Answer 17

cones

Question 18

_____ are involved in your central vision

Answer 18

cones

Question 19

activity in the green and red cones together of the particular magnitudes gives the sensation of

Answer 19

orange/yellow

Question 20

fovea of the eye

Answer 20

has absence of blood vessels but dense in cones for optimal function during daylight

Question 21

foveal photoreceptors have small receptive field size and ____ visual acuity

Answer 21

high

Question 22

region where the optic nerve exits the retina

Answer 22

optic disc

Question 23

papilledema is a sign of

Answer 23

increased intracranial pressure

Question 24

is visual acuity affected in papilledema?

Answer 24

no

Question 25

the left visual field maps to the ____ hemisphere

Answer 25

right

Question 26

the right visual field maps to the ___ hemisphere

Answer 26

left

Question 27

thalamic synapse in the visual pathway

Answer 27

lateral geniculate nucleus