If Thermoregulation Is Considered to Be a Secondary Function of the Large

question 54

Multiple Choice

If thermoregulation is considered to be a secondary function of the large ears of jackrabbits, then the primary function of the ears is

• A) to optimize nutrient intake through the thin, permeable surfaces on the ears.
• B) to alter the rate of gas exchange, based on the adjustable radius of the ears' blood vessels.
• C) to detect predators by using the large size and flexible positioning of the external ears to channel sound waves into the ear canal.
• D) to protect offspring from bright sunlight by the positioning of the ears to cast the maximum shadows.
• E) to protect against pathogens by having a thick, waxy surface on the ears.

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Definitions:

-lepsy

A suffix denoting seizure or attack, used in medical terms related to epilepsy.

Glossopharyngeal

Pertaining to or involving both the tongue and the pharynx, often in the context of nerves or sensations.

Vagus

Referring to the vagus nerve, the tenth cranial nerve, which innervates various organs and influences functions such as heart rate, digestive tract movement, and reflex actions.

Peristalsis

The wave-like muscle contractions that move food through the digestive tract.