Sensory

Question 1

Sensory system pathwsy

Answer 1

action-> afferent-> cortical processing

Question 2

Optic array

Answer 2

pattern of light reaches point of observation (gets projected on to retina)

Question 3

what changes lens shape

Answer 3

cillary body

Question 4

fovea is how much of eye

Answer 4

10% of retina (high density of cones)

Question 5

peripheral vision %

Answer 5

80%, responds to low light, low cone density

Question 6

Geniculostriate pathway

Answer 6

retina->LGN->optic radiations (cortex)

Question 7

2 visual processing pathways

Answer 7

Dorsal- magnocellular- motion, loca, temporal resolutio

Ventral- Parvocellular- colour, form, spacial resolution

Question 8

Occulomotor
trochlear
abducens
what do they innervate

Answer 8

o- Superior/inferior/medial rectus, superior oblique
t-inferior oblique
a- lateral mvmt, lateral rectus

Question 9

What do semicircular and otolith organs detect

Answer 9

semi- angular motion

otolith- linear acceleration

Question 10

Where are hair cells located and what does the fluid do in motion

Answer 10

in cupula

-endolymph moves in opposition to head rotation

Question 11

what does hair cells do when in motion

Answer 11

towards kinocilium= excitation

away= hyperpolarization

Question 12

what does the posterior column medial lemniscus do

Answer 12

-relays sensory info to somatosensory cortex