MRCP UK EXAMINATIONS

ABDOMINAL

GASTROINTESTINAL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Gastrin, cholecystokinin, insulin, motilin and serotonin are:
A
Factors that help intestinal motility
B
Factors that inhibit intestinal motility
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -GI motility is controlled by contractility of smooth muscles of the GI tract, extrinsic and intrinsic neurons (motor and sensory) and some hormones. In mammals, ghrelin (GHRL) and motilin (MLN) stimulate appetite and GI motility and contribute to the regulation of energy homeostasis.

Detailed explanation-2: -Gastrin is a peptide hormone primarily responsible for enhancing gastric mucosal growth, gastric motility, and secretion of hydrochloric acid (HCl) into the stomach.

Detailed explanation-3: -The parasympathetic nervous system, in contrast, exerts both excitatory and inhibitory control over gastric and intestinal tone and motility.

Detailed explanation-4: -Gastrin is a hormone produced by the stomach, which stimulates gastric motility and the release of gastric acid.

There is 1 question to complete.