AP Biology: The Endocrine System

Which of the following is an example of a positive feedback system?
Thirst
Heart rate
Hunger
Body's reaction to a fever
The hypothalamus serves to do all of the following EXCEPT
Connecting the endocrine and nervous system
Regulate blood glucose levels
Regulate release of reproductive hormones
Regulate body temperature
A Type-1 diabetes patient is unable to produce insulin. This would explain which of the following responses?
Rise in blood glucose
Decline in blood glucose
Equilibrium in blood glucose
Shortly after ingesting a big plate of carbohydrate-rich pasta, you measure your blood's hormone levles. What results would you expect, compared to before the meal?
High insulin, low glucagon
High insulin, high glucagon
Low insulin, low glucagon
Low insulin, high glucagon
Low insulin, no change in glucagon
An example of antagonistic hormones controlling homeostasis is
Thyroxine and parathyroid hormone in calcium balance
Insulin and glucagon in glucose metabolism
Progestins and estrogens in sexual differentiation
Epinephrine and norepinephrine in fight-or-flight responses
Oxytocin and prolactin in milk production
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