B9 Focus and Pupil

The process of changing focus is called [?]

Pupil size is controlled by muscles in the [?]

Accommodation is controlled by the [?]

What holds the lens of the eye in place?

• Circular muscles

• Ciliary muscles

• Suspensory ligaments

• Radial muscles

What are the names of the muscles in the iris?

• Circular

• Ciliary

• Radial

• Suspensory

In bright light...

• The pupil becomes smaller to protect the retina

• The pupil becomes larger to protect the retina

• The pupil becomes smaller to stimulate the retina

• The pupil becomes larger to stimulate the retina

When focused on a distant object...

• The lens becomes short and fat

• The lens becomes long and thin

• The pupil becomes short and fat

• The pupil becomes long and thin

The pupil becomes large when the [?] muscles relax

When the ciliary muscle contracts, the [? ?] become slack

Which label represents the radial muscles?

• A

• B