Which of the following is NOT true of 5-hydroxytryptamine?
A) it is secreted by ECL cells of the intestinal mucosa
B) stimulates intrinsic afferent to activate motor neurons for peristalsis
C) stimulates secretion of Cl- and water
D) All of the choices are not true.
Correct Answer:
Verified
Q140: Gastric hydrochloric acid secretion is regulated through
Q141: Most protein digestion occurs in the
A)mouth and
Q142: The _ stimulates increased gastrin activity and
Q143: The acidic chyme entering the duodenum initiates
Q144: Exopeptidases include
A)trypsin.
B)aminopeptidase.
C)elastase.
D)chymotrypsin.
Q146: "Traveler's diarrhea" results when
A)enterogastrone secretion is inhibited.
B)gastrointestinal
Q147: Most of the glucose is absorbed in
Q148: Secretin stimulates chief cells to secrete pepsinogen.
Q149: Aminopeptidase and carboxypeptidase are classified as endopeptidases.
Q150: Sensory neurons within intestinal plexuses that travel
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