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Multiple Choice
The ingestion of a meal high in fat content would cause which of the following to occur?
A
Suppression of cholecystokinin (CCK) release
B
Immediate conversion of fats into glucose in the stomach
C
Decreased release of pancreatic lipase
D
Increased secretion of bile from the gallbladder to aid in fat emulsification
Verified step by step guidance
1
Understand the role of bile in fat digestion: Bile is produced by the liver and stored in the gallbladder. Its primary function is to emulsify fats, breaking them into smaller droplets to increase the surface area for enzymes like pancreatic lipase to act on.
Recognize the role of cholecystokinin (CCK): CCK is a hormone released by the small intestine in response to the presence of fats and proteins in a meal. It stimulates the gallbladder to release bile and the pancreas to secrete digestive enzymes, including lipase.
Analyze the incorrect options: Suppression of CCK release is incorrect because fats stimulate CCK release. Immediate conversion of fats into glucose in the stomach is incorrect because fats are not converted into glucose; they are digested into fatty acids and glycerol. Decreased release of pancreatic lipase is incorrect because fat ingestion increases the need for lipase to break down fats.
Focus on the correct physiological response: A meal high in fat content triggers the release of CCK, which in turn causes the gallbladder to contract and secrete bile into the small intestine. This bile aids in emulsifying fats, making them more accessible for enzymatic digestion.
Conclude the reasoning: The correct answer is 'Increased secretion of bile from the gallbladder to aid in fat emulsification,' as this is the primary response to a high-fat meal to facilitate digestion and absorption of fats.