Central Visual Pathways

Question 1

central pathway

Answer 1

optic nerveoptic chiasm, optic tract

Question 2

lateral geniculate nucleus

Answer 2

thalamic relay nucleus for vision

Question 3

destinations for axons of optic tract

Answer 3

lateral geniculate nucleus (80%)pretectal nucleisuperior colliculushypothalamusreticular formation

Question 4

pretectal nuclei

Answer 4

rostral midbrain

Question 5

visual field

Answer 5

view seen by eyes without moving head

Question 6

binocular

Answer 6

part of visual field seen by both eyes

Question 7

monocular

Answer 7

part of visual field viewed by 1 eye

Question 8

visual hemifields

Answer 8

left and rightdivision of visual fields

Question 9

optic tract

Answer 9

carries info from contralateral visual fieldcortex receives info from contralateral visual fields

Question 10

optic radiation

Answer 10

axons from lateral geniculate nucleus

Question 11

meyers loop

Answer 11

more anteriorly into temporal lobe-superior visual field-DAMAGE here significant**

Question 12

primary visual cortex

Answer 12

brodmans area 17aka lingual gyrus and cuneus

Question 13

striations in primary visual cortex

Answer 13

aka striate cortexline of axons

Question 14

geniculostriate tract

Answer 14

LGN to the primary visual cortex

Question 15

pretectal nuclei

Answer 15

control of pupillary light reflexesanterior to the superior colliculus

Question 16

pupillary light reflex

Answer 16

receptor - retinaprimary afferent - optic n.interneuron - pretectal nucleimotor neuron - edinger-westphal nucleus to oculomotor n.target - pupillary sphincter muscle

Question 17

edinger westphal nucleus

Answer 17

motor nucleus of the pupillary light reflexes-axons - oculomotor nerve

Question 18

constriction of pupil

Answer 18

oculomotor-parasympathetic

Question 19

dilation of pupil

Answer 19

sympathetics

Question 20

control of pupil size

Answer 20

GVE-not under voluntary control

Question 21

sympathetics to iris

Answer 21

postganglionic cell bodies are in the superior cervical ganglion-follow blood vessels

Question 22

superior colliculus

Answer 22

coordinates visual grasp reflex-visual stimulus activates tectospinal tract

Question 23

suprachiasmatic nucleus

Answer 23

anterior hypothalamuscircadian rhythmsmelanopsin system

Question 24

primary visual cortex

Answer 24

brodmans area 18/19-processing and interpretation-look at picture - pick out specifics quickly

Question 25

movement and where is it?

Answer 25

dorsal pathway-to parietal region

Question 26

color and what is it?

Answer 26

ventral pathway-to temporal region

Question 27

prosobagnosia

Answer 27

inablity to recognize faces and facial expression

Question 28

temporal or nasal

Answer 28

referring to visual field

Question 29

homonymous

Answer 29

same side

Question 30

anopia

Answer 30

without vision

Question 31

hemianopia

Answer 31

without half vision