Structure of the Eye

Question 1

Retina

Answer 1

1. Consists of receptors (rods, cones), bipolar cells, ganglion cells, some others
2. Light enters through pupil, then passes through eyeball to retina and cells, then strikes receptors

Question 2

Optic Nerve

Answer 2

Bundle of axons of ganglion cells, leading out back of eye to brain (leaving blind spot)

Question 3

Fovea

Answer 3

Central depression in retina where cones are most densely packed - most acute vision

Question 4

Rods

Answer 4

Very sensitive; black/white (achromatic); night vision; mostly in periphery

Question 5

Cones

Answer 5

Less sensitive; color (chromatic); daytime vision; mostly in fovea