What Occurs in the Eye When Mammals and Birds Focus

question 48

Multiple Choice

What occurs in the eye when mammals and birds focus on close objects?

• A) Ciliary muscles contract to make the lens more round.
• B) Suspensory ligaments attached to the lens contract.
• C) Lens shape is altered when ciliary muscles relax.
• D) The lens moves closer to the retina.
• E) The lens moves farther from the retina.

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Definitions:

Duodenum

First part of the small intestine, where chyme enters from the stomach.

Peptidases

Enzymes that break down peptides into amino acids by cleaving the peptide bonds between amino acids.

Small Intestine

In vertebrates, the portion of the digestive tract that precedes the large intestine. In humans, consists of the duodenum, jejunum, and ileum.

Cardiovascular Disease

A class of diseases that involve the heart or blood vessels, including coronary artery disease and stroke.