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Flashcards in anatomy :visual pathway Deck (8)
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1
Q

function of optic chiasm

A

ensure visual signals go to both sides of brain

2
Q

optic tract

A

transports visual info from optic chaism to lateral geniculate nuclei

3
Q

function of lateral geniculate body

A

relay station for all axons of retinal ganglion cells helping w vision

4
Q

function of superior colliculus

A

visual, auditory and somatosensory information are integrated to initiate motor commands

5
Q

what is a optic disk

A

where ganglion axons cells accumulate and exit the eye

6
Q

the retina : rods

  • required for
  • components
A
  • dim light and peripheral vision

- inner , outer (contains rhadapsin), rod fibre (nucleus)

7
Q

cones
types
function
components

A
  • types one contains a different pigment, allowing absorption of red, green or blue light
  • sharpness of vision and trichromatic vision colour
  • inner and outer ((Pigment bearing discs)
8
Q
4 common neurological patterns of vision loss
Lesion at optic nerve
Optic nerve compression
Posterior cerebral artery stroke
blind spot
A
  • Monocular blindness
  • Bitemporal hemianopia
  • Homonymous hemianopia
  • Lesions of the primary visual cortex