Pathophysiology Chapter 21 - Mechanisms of Hormonal Regulation

Pathophysiology Chapter 21 - Mechanisms of Hormonal Regulation




1. What imbalance lessens the rate of secretion of parathyroid hormone (PTH)?

a. Increased serum calcium levels

b. Decreased serum magnesium levels

c. Decreased levels of thyroid-stimulating hormone

d. Increased levels of thyroid-stimulating hormone

2. Regulation of the release of insulin is an example of which type of regulation?

a. Negative feedback

b. Positive feedback

c. Neural

d. Physiologic

3. A student asks the professor how a faulty negative-feedback mechanism results in a

hormonal imbalance. What response by the professor is best?

a. Hormones are not synthesized in response to cellular and tissue activities.

b. Decreased hormonal secretion is a response to rising hormone levels.

c. Too little hormone production is initiated.

d. Excessive hormone production results from a failure to turn off the system.

4. Which substance is a water-soluble protein hormone?

a. Thyroxine

b. Aldosterone

c. Follicle-stimulating hormone

d. Insulin

5. Which of these is a lipid-soluble hormone?

a. Cortisol