Biopsies are taken from the antral and duodenal mucosa of a 45-year-old man. Which of the following hormones can be found in tissue homogenates from both locations?
A)Cholecystokinin
B)Glucose-dependent insulinotropic peptide
C)Gastrin
D)Motilin
E)Secretin

Question

Quizplus · Accepted Answer

Gastrin is produced in the antrum of the stomach and in smaller amounts in the duodenum, so it is likely to be found in tissue homogenates from both locations. The other hormones listed are primarily produced in different parts of the digestive tract, so they would not be expected to be present in both antral and duodenal mucosa biopsies.

Biopsies Are Taken from the Antral and Duodenal Mucosa of a 45-Year-Old