QuestionSBA
QuestionChoice
The G cells in the pyloric antrum of the stomach release the hormone gastrin, not CCK. There are many functions of gastrin including the stimulation of gastric acid secretion, promotion of gastric mucosa growth, and acceleration of gastric emptying via relaxation of the pyloric sphincter.
10025639
e
G cells in the pyloric antrum of the stomach
QuestionChoice
The PP cells of the pancreas secrete the hormone pancreatic polypeptide, not CCK. Pancreatic polypeptide counteracts CCK, inhibiting pancreatic secretion and gallbladder contraction.
10025638
d
PP cells of the pancreas
QuestionChoice
The M cells in the small intestine crypts secrete the hormone motilin, not CCK. Motilin functions to increase peristalsis and accelerate gastric emptying during a fasted state.
10025637
c
M cells in the small intestine crypts
QuestionChoice
The S cells of the duodenum secrete the hormone secretin, not CCK. Secretin functions to neutralise acid in the duodenum by stimulating the release of sodium bicarbonate. Secretin also has an osmoregulatory function in the hypothalamus
10025636
b
S cells of the duodenum
QuestionChoice
Correct - I cells of the duodenum secrete CCK. The presence of fatty/amino acids in the chyme stimulates the release of CCK. CCK inhibits gastric emptying (allowing time for the digestion of food further down the gastrointestinal tract) and stimulates the acinar cells of the pancreas to release digestive juices.
10025635
a
I cells of the duodenum
Concept
Chapter
2693
5855
Cholecystokinin
Topic
149
Gastro-intestinal physiology
17525
A 35 year old women is assessed on the surgical admissions ward. She reports cramping right upper quadrant pain, especially after she has just eaten a fatty meal. She wants to better understand how fatty acids in the body are digested. The clinician explains how the hormone cholecystokinin (CCK) promotes the production of bile and stimulates the gallbladder to contract.

Which of the following cell types secretes CCK?
a