AP PSYCHOLOGY

MOTIVATION EMOTION AND STRESS

THEORIES AND PHYSIOLOGY OF EMOTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Increases in insulin will:
A
lower blood sugar and trigger hunger.
B
raise blood sugar and trigger hunger.
C
lower blood sugar and trigger satiety.
D
raise blood sugar and trigger satiety.
Explanation: 

Detailed explanation-1: -These experiments show that elevations in insulin produce increased hunger, heightened perceived pleasantness of sweet taste, and increased food intake. Finally, a study is described that considers how different insulin levels, produced by the type of food ingested, may affect subsequent food intake.

Detailed explanation-2: -It is true that when exogenous administration of insulin causes low blood sugars then this can increase appetite. However, the physiologic effect of insulin itself on the brain is to increase satiety.

Detailed explanation-3: -Insulin acts directly at the liver to suppress the synthesis and secretion of glucose, and some plasma insulin is transported into the brain and especially the mediobasal hypothalamus where it elicits a net catabolic response, particularly reduced food intake and loss of body weight.

Detailed explanation-4: -Most people will have some warning that their blood glucose levels are too low, which gives them time to correct them. Symptoms usually occur when blood sugar levels fall below four millimoles (mmol) per litre. Typical early warning signs are feeling hungry, trembling or shakiness, and sweating.

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