Eye Structures (Part 2)

Which numbered structure is the retina?

• Number (7)

• Number (8)

• Number (9)

• Number (10)

What is the function of choroid?

Choose the TWO correct answers.

• It contains nerves that transmit nerve impulses to the brain.

• It contains blood vessels to bring oxygen and glucose to the eyeball.

• It keeps the eyeball firm and helps to refract light onto retina.

• It is pigmented black to prevent internal reflection of light.

Which structure causes the MOST refraction of light to occur inside the eye?

• Cornea

• Choroid

• Lens

• Pupil

The retina is a light-sensitive area where images are formed.

What is the name of the light-sensitive cells found on retina?

• Photoreactors

• Photostimulators

• Photoreceptors

• Photoeffectors

Which part of the eye contains the highest concentration of photoreceptors (cones)?

• Fovea

• Optic nerve

• Blind spot

• Lens