Which of These Statements Does NOT Correctly Describe the Colon

question 154

Multiple Choice

Which of these statements does NOT correctly describe the colon?

• A)When mass movements of the colon propel feces into the rectum, stimulation of the stretch receptors in the rectal wall reflexively causes contraction of the internal and external anal sphincters to prevent defecation from occurring until an opportune time.
• B)Colonic bacteria digest cellulose for their own growth and reproduction.
• C) Absorption of salt and water converts the colonic contents into fecal material.
• D) No digestive enzymes are secreted by the colon.

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Definitions:

Ideal Conditions

Describes the most favorable circumstances or settings in which a specific process or experiment could occur without any impediments.

Serotonin

A neurotransmitter in the brain that affects mood, social behavior, appetite, digestion, sleep, memory, and sexual desire and function.

Dopamine

A neurotransmitter involved in controlling movement and posture, moderating mood, and affecting motivation and reward.

Impulsivity

A tendency to act on a whim, displaying behavior characterized by little or no forethought, reflection, or consideration of the consequences.