Year 11 Triple B5.5 Human Eye Function Quiz

What is the primary function of the cornea in the human eye?

• To regulate pupil size.

• To protect the eye and help focus light.

• To produce tears for lubrication.

Which part of the eye is responsible for detecting light and converting it into electrical impulses?

• The lens

• The iris

• The retina

What controls the amount of light entering the eye by adjusting the pupil size?

• The choroid

• The iris

• The retina

Which type of receptor cell in the retina is primarily responsible for vision in dim light?

• Cones

• Rods

• Ganglion cells

What is the process called when the lens changes shape to focus light from objects at different distances?

• Refraction

• Accommodation

• Dilation

How do electrical impulses from the eye reach the brain?

• Through the ciliary body

• Through the optic nerve

• Through the suspensory ligaments

What happens to the pupil in bright light conditions?

• It dilates.

• It constricts.

• It remains unchanged.

Where is the "blind spot" located in the eye?

• At the center of the retina.

• Where the optic nerve leaves the eye.

• On the surface of the cornea.

What is the main function of the lens in the eye?

• To absorb excess light.

• To fine-tune the focusing of light rays onto the retina.

• To provide nutrients to the eye.

Which part of the eye has tiny suspensory ligaments and ciliary muscles attached to it, enabling it to change shape?

• The iris

• The lens

• The retina