What Triggers the Defecation Reflex

question 93

Multiple Choice

What triggers the defecation reflex?  

• A) Contraction of the colon
• B) Stretching of the rectum
• C) Voluntary contraction of a sphincter
• D) Emotional stress and a diet low in fiber
• E) Sufficient concentration of feces due to water removal

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Definitions:

American Indians

Indigenous peoples of the United States, including numerous tribes, each with their own distinct cultures and history.

European Americans

Individuals in the United States who trace their ancestry to Europe.

Insulin

A substance secreted by the pancreas that controls the levels of sugar in the blood by enabling glucose to be absorbed into body tissues.

Cortisol

A steroid hormone produced by the adrenal glands, often referred to as the "stress hormone" because its levels increase in response to stress.