Multiple Choice
Digestive secretion in humans is
A) under hormonal control only.
B) under nervous control only, as evidenced by Pavlov's experiments.
C) elicited by zymogens, inactive precursors of hormones secreted to prevent damage to the cells themselves.
D) regulated by feedback systems involving exocrine and endocrine hormones and the nervous system.
E) primarily under the control of bile secretions which emulsify fats.
Correct Answer:

Verified
Correct Answer:
Verified
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