CN II (Optic)

Question 1

What are in the retina at the back of the eyeball?

Answer 1

Specialized sensory neurons ( rods and cones)

Question 2

Visual impulses are sent to the optic N via what?

Answer 2

Axons of ganglion cells of retina

Question 3

The optic nerves meet where?

Answer 3

Optic Chiasm which lies above pituitary fossa

Question 4

What cross over at the chiasm?

Answer 4

Impulses from nasal retina (temporal field of vision)

Question 5

Damage to the optic chiasm will present with what?

Answer 5

Bitemporal hemianopia

Question 6

Fibers from optic N synapse in the what?

Answer 6

Lateral geniculate body of thalamus

Question 7

Fibers from thalamus continue as what?

Answer 7

Optic Radiation (geniculocalcarine tract) to primary visual cortex

Question 8

Damage to optic radiation will present with what?

Answer 8

Homonymous hemianopia

Question 9

Primary visual cortex is located where?

Answer 9

In occipital lobe on either side of calcarine fissure (brodmann area 17)

Question 10

Damage to primary visual cortex will result in what?

Answer 10

Homonymous hemianopia with macular sparing