Which of the Following Is NOT True About the Hormone

question 43

Multiple Choice

Which of the following is NOT true about the hormone CCK (cholecystokinin) ?

• A) The duodenum releases CCK when food distends the duodenum.
• B) CCK tightens the sphincter muscle between the stomach and duodenum.
• C) CCK crosses the blood-brain barrier and inhibits cells in the hypothalamus.
• D) CCK stimulates the vagus nerve and causes cells in the hypothalamus to release CCK as a neurotransmitter.

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