Question

a bolus of fatty chyme is released into the small intestine. which of the following substances will be released to eventually break down the fats?
a secretin
b cck
c gastrin
d somatostatin

Explanation:

When a bolus of fatty chyme enters the small intestine, cholecystokinin (CCK) is released. CCK stimulates the gall - bladder to contract and release bile, which helps in the emulsification of fats for further breakdown. Secretin stimulates the pancreas to secrete bicarbonate - rich fluid to neutralize stomach acid. Gastrin stimulates gastric acid secretion in the stomach. Somatostatin inhibits the release of various gastrointestinal hormones.

Answer:

B. CCK