Edexcel A2 Bio: The Eye & Light Detection

What is the name of part a?

What is the name of structure h?

What is the name of part b?

What is the name of part g?

What is the name of part i?

Where are the cone cells found?

• Sclera only

• Fovea only

• Conjunctiva only

• Throughout the retina

What is the name of part C?

What am I?

A circular hole in the iris through which light enters the eye

• Cornea

• Pupil

• Aqueous humour

• conjunctiva

What am I?

A circular sheet of muscle that controls the amount of light entering the eye

What happens to the iris muscles when there is dim light?

• The radial muscles contract & the circular muscles relax

• The circular muscles contract and the radial muscles relax