What Happens When the Arrector Pili Muscles Contract

question 28

Multiple Choice

What happens when the arrector pili muscles contract?

• A) Your head nods "yes."
• B) Your leg kicks out.
• C) The hairs on your skin stand on end.
• D) The blood from your skin is rerouted to your core.
• E) You tap your finger.

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Definitions:

Stomach Contractions

The involuntary movements of the stomach muscles that mix and propel contents through the digestive system.

Ghrelin

A hormone produced mainly by the stomach that stimulates appetite and signals hunger to the brain.

Ghrelin

A hormone produced in the stomach that stimulates appetite, promoting the feeling of hunger before meals.

Leptin

A hormone produced by fat cells that helps to regulate body weight by inhibiting hunger and therefore reducing food intake.