ǝʌɹǝu ɔᴉʇdo

Question 1

Thedistalend(calledthe“outersegment”)ofthephotoreceptor are closest to which layer of the eye?

Answer 1

choroid

Question 2

. Three type of cones receive color information in which colors?

Answer 2

red, green, blue

Question 3

Cones are more concentrated toward toward which area?

Answer 3

center of retina (fovea)

Question 4

Rods sense which type of stimuli?

Answer 4

only light v. dark

Question 5

Periphery of retina is almost completely composed of

which cells?

Answer 5

Rods

Question 6

Rods are never found in which area of the eye?

Answer 6

Fovea

Question 7

Depolarized photoreceptors relay information to bipolar cells by synapsing in which layer?

Answer 7

Outer plexiform layer

Question 8

Bipolar cell bodies are found in the

____________________ layer.

Answer 8

Inner nuclear

Question 9

Bipolar cells relay information to ganglion cells. The synapse occurs in which layer?

Answer 9

Inner plexiform layer

Question 10

Are optic nerve axons myelinated?

Answer 10

Yes

Question 11

Which cells myelinate optic nerve axons?

Answer 11

interfascicular oligodendrocyte/Schwan Cells

Question 12

In the optic chiasma, which fibers from the retina will cross?

Answer 12

medial (nasal) side

Question 13

Which fibers will not cross, rather, split to form the optic tract traveling around the cerebral peduncles?

Answer 13

Lateral (peripheral) side of the retina

Question 14

What are the nuclei or termination for the optic nerve?

Answer 14

lateral geniculate body
superior colliculus
pretectal nucleus of the midbrain

Question 15

Synapses of the lateral geniculate body head to the cortex at which Broadman Area?

Answer 15

Broadman Area 17

Question 16

Lesion of the optic nerve would result in what outcome?

Answer 16

Complete loss one eyeball

Question 17

Lesion of the optic chiasma would result in what outcome?

Answer 17

Loss peripheral vision, tunnel vision

Question 18

Lesion of the optic tract would result in what outcome?

Answer 18

one half of the feild vision would be lacking

Question 19

What are the four visual reflexes associated with cranial nerve II?

Answer 19

direct/consensual light reflexes
accommodation reflex
corneal reflex
convergence