Which of the following is not secreted into the duodenal lumen?
A)aminopeptidase
B)lipase
C)trypsinogen
D)procarboxypeptidase
E)amylase

Question

Quizplus · Accepted Answer

Aminopeptidase is not secreted into the duodenal lumen but is instead found on the surface of the intestinal epithelial cells, where it acts to break down small peptides into individual amino acids for absorption. The other enzymes listed (lipase, trypsinogen, procarboxypeptidase, and amylase) are all secreted into the duodenum to aid in the digestion of macronutrients.

Which of the Following Is Not Secreted into the Duodenal