Eye

Question 1

Distribution and function of rod cells

Answer 1

Distribution:
- More rod cells than cone cells
- Unevenly distributed in retina
- No rod cells at blind spot because of optic nerve

function:
- rods detect light in low intensity
- do not detect colour (black and white)
- provide night vision

Question 2

Cone cells distribution and function

Answer 2

Distribution:
- Mostly concentrated in fovea
- no cone cells at blind spot because of optic nerve

Function:
- cones detect light in high intensity
- detect colour
- 3 different types; red, blue, and green cone cells

Question 3

What controls size of the pupil in the eye

Answer 3

Iris