Question: Why don’t all body cells respond to a particular hormone?

Answer: Only cells that have receptors for the hormone can respond.

Question: Where are receptors for steroid hormones found?

Answer: in the nucleus of target cells

Question: Which hormone is released by nerve impulses?

Answer: epinephrine

Question: Which of these results when hormone secretion is regulated by a negative feedback mechanism?

Answer: The concentration of a hormone remains within a narrow normal range.

Question: How do lipid-soluble hormones carry out their actions at their target cells?

Answer: directly activate genes and stimulate protein synthesis

Question: Which of the following is a humoral stimulus for hormone release?

Answer: calcium ions

Question: What is the main mechanism for regulating hormone secretion?

Answer: negative feedback

Question: Which of these is an example of using a humoral stimulus to cause hormone secretion?

Answer: An increase in blood glucose stimulates the release of insulin.

Question: Which of these is characteristic of an endocrine gland?

Answer: ductless

Question: Which of these endocrine glands is located just above a kidney?

Answer: adrenal gland