VISUAL PATHWAY PARTS

Question 1

Fibers of Optic nerve:

Answer 1

pupillary / afferent pupillomotor fibers

Visual fibers

Efferent / retino-motor fibers

intercurrent / commissural / internuncial fibers

Question 2

carries impulse from pupil to the brain

concerned w/ pupillary light reflex

Answer 2

pupillary / afferent pupillomotor optic nerve fibers

Question 3

continuation of ganglionic fibers of retina up to LGB

concerned with visual sensation

Answer 3

Visual fibers of optic nerve

Question 4

carry impulses from brain to retina

Answer 4

EFFERENT / retino-motor fibers of optic nerve

Question 5

links one retina to another:

Answer 5

intercurrent / commissural / internuncial

-fibers of optic nerve

Question 6

enveloped by pia mater only

Answer 6

Optic chiasma

Question 7

posterior continuation of optic chiasma up to LGB

Answer 7

Optic Tract

Question 8

Lesion in the Optic Tract:

Answer 8

Incongruous homonymous hemianopsia

Question 9

when pupil does not react when a narrow pencil of light is thrown on the blind half of retina

but react on seeing portion

Answer 9

Wernicke’s hemianopic pupil

Question 10

serves as end station for some visual fibers / area where fibers terminate

Answer 10

LATERAL GENICULATE BODY

Question 11

LGB is regarded as?

Answer 11

Subcortical visual center of brain

serves as relay station between retina and cortex

Question 12

LGB fibers from the temporal side terminate in layers:

Answer 12

2, 3 , 5

Question 13

LGB fibers the nasal side terminate in layers:

Answer 13

1, 4 ,6

Question 14

Lesion in the LGB:

Answer 14

Congruous Homonymous hemianopsia

Question 15

location on retina of LGB lateral fibers:

Answer 15

inferior quadrant of both Retina

affects the superior quadrant of visual field

Question 16

location on retina of LGB medial fibers:

Answer 16

Superior quadrant of both Retina

affects the inferior quadrant of visual field

Question 17

LGB fibers that are present:

R inferior quadrant of R.E

R inferior quadrant of L.E

Answer 17

Right Lateral fibers

Question 18

LGB fibers that are present:

L inferior quadrant of R.E

L inferior quadrant of L.E

Answer 18

Left lateral fibers

Question 19

LGB fibers that are present:

R superior quadrant of R.E

R superior quadrant of L.E

Answer 19

right medial fibers

Question 20

LGB fibers that are present:

L superior quadrant of R.E

L superior quadrant of L.E

Answer 20

left medial fibers

Question 21

damage to LGB right lateral fibers:

Answer 21

L superior quadrantanopsia

Question 22

damage to LGB left lateral fibers:

Answer 22

R superior quadrantanopsia

Question 23

damage to LGB right Medial fibers:

Answer 23

L inferior quadrantanopsia

Question 24

damage to LGB left medial fibers:

Answer 24

R inferior quadrantanopsia

Question 25

Lesion in Optic Radiation:

Answer 25

congruous homonymous hemianopsia

Question 26

damage on RIGHT OR:

Answer 26

Left homonymous hemianopsia

Question 27

damage on left OR:

Answer 27

right homonymous hemianopsia

Question 28

damage on Right Temporal OR:

Answer 28

Right nasal hemianopsia

Question 29

damage on Right Nasal OR:

Answer 29

Left temporal hemianopsia

Question 30

damage on Left Temporal OR:

Answer 30

Left nasal hemianopsia

Question 31

damage on Left nasal OR:

Answer 31

right temporal hemianopsia

Question 32

carries visual impulse to Area 17/striata

Answer 32

Optic Radiation

Question 33

other name for Optic Radation:

Answer 33

geniculo-calcarine tract

Question 34

location of Visual cortex at occipital lobe:

Answer 34

Medial aspect of occipital lobe

Question 35

lesion on Area 17:

Answer 35

Homonymous scotoma / macular sparing