Which of the following would be expected to increase after surgical removal of the duodenum?
(a) Gastric emptying
(B) Secretion of cholecystokinin (CCK)
(C) Secretion of secretin
(d) Contraction of the gallbladder (e) Absorption of lipids
After surgical removal of the duodenum, the following changes can be expected:
(a) Gastric emptying - This would likely increase because the duodenum plays a role in regulating gastric emptying. Without the duodenum, there would be less feedback inhibition on gastric emptying.
(b) Secretion of cholecystokinin (CCK) - This would likely decrease. CCK is secreted in response to the presence of fats and proteins in the duodenum. If the duodenum is removed, there would be no site for CCK secretion.
(c) Secretion of secretin - This would likely decrease as well. Secretin is released in response to acidic chyme entering the duodenum. Without the duodenum, there would be no stimulus for secretin secretion.
(d) Contraction of the gallbladder - This would likely decrease. CCK stimulates gallbladder contraction, and without the duodenum, CCK secretion would be reduced.
(e) Absorption of lipids - This would likely decrease. The duodenum is important for the emulsification and absorption of lipids, and its removal would impair lipid absorption.
In summary, the most likely answer is:
(a) Gastric emptying would be expected to increase after surgical removal of the duodenum.