For hormones that homeostatically regulate cellular functions,
A) negative feedback typically regulates hormone secretion.
B) the circulating level of a hormone is held constant through a series of positive feedback loops.
C) both lipid-soluble hormones and water-soluble hormones bind to intracellular protein receptors.
D) endocrine organs release their contents into the bloodstream via specialized ducts.
E) it is impossible to also have neural regulation of that system.

Question

Quizplus · Accepted Answer

Negative feedback is a common mechanism used by the body to maintain homeostasis, including in the regulation of hormones. When hormone levels become too high, negative feedback signals to decrease secretion, and when levels become too low, the opposite occurs.

Answer: C
 Lipid-soluble hormones can enter cells and bind to intracellular receptors, while water-soluble hormones bind to cell surface receptors. Both types of hormones can regulate cellular functions.

Answer: D
 Endocrine organs release hormones into the bloodstream, which carries them to their target cells. Unlike exocrine glands, endocrine glands do not have specialized ducts.

Answer: E
 Neural regulation can also play a role in the regulation of hormones, such as the release of adrenaline from the adrenal medulla in response to a stressful situation.

For Hormones That Homeostatically Regulate Cellular Functions