EYES Posterior Segment

Question 1

Posterior Segment:

Answer 1

Area behind the eye lense

contains: Vitrous humor, posterior sclera, choroid, retina

Question 2

Vitrous Humor:

Answer 2

thick-gel in posterior segment

function: holds retina in place, maintains spherical shape of eyes

Question 3

Posterior Sclera:

Answer 3

white-tissue covers outer posterior segment of eyes

Question 4

Posterior Choroid:

Answer 4

pigmented layer, deep to the posterior scalera

cotains arteries/veins

Question 5

Retina:

Answer 5

sensory portion of posterior segment

receives light/visual stimuli & sends brain visual info

photo-receptor neurons rods/cones

Question 6

Optic Disk:

Answer 6

round area on retina, where the Optic Nerve enters the eyes

Blind spot, no photoreceptors

Question 7

Macula:

Answer 7

lateral to the optic disk
contains Equea

Fovea Centralis: depression in center of the macula, highest concentration of CONES