Question

What are two mechanisms by which CCK increases satiety?

   What are two mechanisms by which CCK increases satiety?

Biological Psychology

Biological Psychology

James W. Kalat 13th Edition

Chapter 9, Problem 15

Instant Answer

Solved by Expert Katie Haasch

04/27/2021

Step 1

This constriction causes the stomach to fill more quickly during eating, leading to faster stomach distension. In mathematical terms, this can be represented as: \[CCK \rightarrow Constriction \rightarrow Faster \, Stomach \, Distension\] Show more…

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What are two mechanisms by which CCK increases satiety?

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Key Concepts

Cholecystokinin (CCK)

CCK is a hormone released by the small intestine in response to food intake, particularly fats and proteins. It plays a key role in signaling satiety by communicating with the brain and coordinating digestive processes, thereby reducing further food intake.

Vagal Afferent Signaling

Vagal afferents are nerve fibers that transmit signals from the gastrointestinal tract to the brain. When activated by CCK, these pathways convey information about fullness and digestive status, contributing to the sensation of satiety.

Gastric Emptying

Gastric emptying refers to the process by which the stomach gradually releases its contents into the small intestine. CCK slows gastric emptying, leading to prolonged stomach distension and the enhancement of satiety signals, which helps reduce overall food consumption.

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