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Author Question: Which of the following indicates the importance of peripheral nutrient receptors, located in the ... (Read 139 times)

CharlieWard

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on: Jun 22, 2018
Which of the following indicates the importance of peripheral nutrient receptors, located in the liver, in satiety?
 
  A) Glucose infusions into the hepatic portal vein inhibit eating.
  B) Insulin can initiate or inhibit eating.
  C) Fructose infusions into the hepatic portal vein inhibit eating.
  D) Nutrient receptors are located in the brain tissue surrounding the lateral ventricle.
  E) Infusion of 2-DG into the lateral ventricle stimulates eating.

Question 2

All of the following statements about cholecystokinin (CCK) are true EXCEPT that
 
  A) it inhibits gastric contractions.
  B) the site of action for CCK is directly on neurons of the ventromedial hypothalamus.
  C) it stimulates contraction of the gallbladder and pylorus.
  D) it inhibits eating.
  E) the blood level of CCK is related to the fat content of a meal.


strudel15

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Reply #1 on: Jun 22, 2018
Answer to Question 1

Answer: C
Rationale: The fact that fructose infusions into the hepatic portal vein inhibit eating indicates the importance of peripheral nutrient receptors, located in the liver, in satiety.

Answer to Question 2

Answer: B
Rationale: CCK does not act directly on neurons of the ventromedial hypothalamus to inhibit eating.


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