Refer to the figure showing hormonal control of digestion. Using the figure, determine what will happen after a person who is unable to produce normal levels of cholecystokinin eats a fatty meal.
A) The person's stomach motility will be decreased.
B) The person's stomach will secrete excess acid.
C) The acidic chyme will not be neutralized in the intestine.
D) The fat will not be emulsified.
E) Insulin will not be released by the pancreas.

Question

Refer to the figure showing hormonal control of digestion.  Using the figure, determine what will happen after a person who is unable to produce normal levels of cholecystokinin eats a fatty meal.
A) The person's stomach motility will be decreased. 
B) The person's stomach will secrete excess acid. 
C) The acidic chyme will not be neutralized in the intestine. 
D) The fat will not be emulsified. 
E) Insulin will not be released by the pancreas.

Quizplus · Accepted Answer

Cholecystokinin (CCK) is released in response to the presence of fatty acids and amino acids in the small intestine. CCK stimulates the release of bile from the gallbladder and the secretion of enzymes from the pancreas that help in the digestion of fats. If a person is unable to produce normal levels of CCK, there will be a decrease in the secretion of bile and pancreatic enzymes, which will lead to incomplete digestion of fats. As a result, the fat will not be emulsified, which will make it difficult for the lipase enzyme to break down the fat into fatty acids and glycerol. This can lead to the formation of large fat droplets in the intestine, which are difficult to absorb. Therefore, the best choice is D. The other options are not directly related to the absence of CCK.

Refer to the Figure Showing Hormonal Control of Digestion