Which Statement Concerning Defecation Reflex Is NOT Correct

question 211

Multiple Choice

Which statement concerning defecation reflex is NOT correct?

• A) It is initiated when mass movements force fecal material into the rectum, stimulating stretch receptors in the rectal wall.
• B) It involves relaxation of the internal anal sphincter and contraction of the sigmoid colon and rectum.
• C) It cannot be overridden by voluntary contraction of the external anal sphincter.
• D) a and b

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Definitions:

Bushels of Wheat

A unit of measure used in agriculture, particularly in the United States, for trading and pricing wheat.

Workers

Individuals engaged in a task or activity for wages or salary.

Diminishing Marginal Product

The decrease in the additional output gained from using an extra unit of a production input, holding all other inputs constant, beyond a certain point.

Marginal Product

The supplementary yield that comes from the utilization of an extra unit of a given input, with all other inputs remaining fixed.