Explain How the Secretion of Cholecystokinin in Response to Fats

question 19

Multiple Choice

Explain how the secretion of cholecystokinin in response to fats in the duodenum,together with the actions of cholecystokinin,constitute a negative feedback mechanism.

• A)Contraction of the gall bladder moves bile into the duodenum.
• B)Pancreatic enzymes include lipase,which digests fat.
• C)Bile contains bile salts,which emulsify fats.
• D)As fats are digested,the stimulus for secretion of further cholecystokinin is removed.
• E)All of these are necessary components of this negative feedback mechanism.

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Definitions:

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A form of joint disorder that involves inflammation of one or more joints, causing pain and stiffness.

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A thick, slippery secretion produced by mucous membranes and glands, helping to reduce friction and protect surfaces.

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The resistance that one surface or object encounters when moving over another, a fundamental force important for various physical processes.

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The process by which a species becomes better suited to its environment through genetic changes that enhance survival and reproduction.