Which Statement Is NOT True of the Defecation Reflex

question 254

Multiple Choice

Which statement is NOT true of the defecation reflex?

• A)Voluntary control is provided by the external anal sphincter.
• B)The internal anal sphincter contracts.
• C)The reflex is integrated in the spinal cord.
• D)The reflex is stimulated when feces stretch the rectum.

---

Definitions:

Economic Profit

Revenue minus the opportunity cost of resources used; usually less than the accounting profit.

Accounting Profit

Revenue minus explicit cost.

Factors of Production

The resources used in the creation of goods and services, traditionally categorized into land, labor, capital, and entrepreneurship.

Opportunity Cost

The real cost of an item: what you must give up in order to get it.