neuro visual system and cerebral odd spots

Question 1

what’s the macula of the fovea centralis

Answer 1

area with dense cone concentration where we have the best vision

Question 2

how are receptors in the peripheral retina specialized?

Answer 2

w/ rods for black and white,
detecting movement
figuring out where something is

Question 3

what make up the optic nerve?

Answer 3

axons of ganglion cells

Question 4

what make up the layers of the retina?

Answer 4

rods and cones
bipolar cells
ganglion cells

Question 5

what causes the blind spot of the eye?

Answer 5

optic disc

Question 6

images of our temporal visual field are relayed in what retinal field?

Answer 6

temporal visual corresponds with nasal retinal

likewise, nasal visual field corresponds with temporal retinal field

Question 7

lesion of the optic nerve results in…

Answer 7

ipsilateral blindness of the eye on the side of the lesion

Question 8

axons of the ______ retinal field cross in the ______

Answer 8

nasal retinal field

optic chiasm

Question 9

what happens if the pituitary gland expands and the center of the optic chiasm becomes impaired?

Answer 9

bi-temporal loss of vision due to impairment of both nasal retinal fields

Question 10

how would vision be affected if the internal carotid a. has an aneurysm and impairs the lateral part of the optic chiasm?

Answer 10

you would lose temporal retinal field (nasal visual field for the eye on the side of the lesion

Question 11

what happens if there’s a lateral tract, primary visual cortex or lateral geniculate body lesion?

Answer 11

you would lose sight for the field opposide the side of the lesion
ie. if you have a lesion of the L optic tract, you’d lose the L temporal retinal field and R nasal retinal field causing you to lose your right field of vision.

Question 12

although the optic cortex forms layers ________ process info in a _______ route ______ to the surface

Answer 12

ocular dominance columns/barrels
vertical
perpendicular