Chapter 11, Problem 1ATP

Cells of an overactive thyroid can be killed by radioactive iodine. Explain why the thyroids hormone-producing cells take up more radioactive iodine than other cells of the body.

Which endocrine glands are associated with the kidneys? a. thyroid glands b. pituitary glands c. adrenal glands d. gonads

Hormones are produced by ______________. a. endocrine glands and cells b. some neurons c. exocrine cells f. a, b, and c d. a and b e. a and c

Figure 16.14 Goiter, a disease caused by iodine deficiency, results in the inability of the thyroid gland to form T3 and T4 . The body typically attempts to compensate by producing greater amounts of TSH. Which of the following symptoms would you expect goiter to cause? a. Hypothyroidism, resulting in weight gain, cold sensitivity, and reduced mental activity. b. Hyperthyroidism, resulting in weight loss, profuse sweating and increased heart rate. C. Hyperthyroidism, resulting in weight gain, cold sensitivity, and reduced mental activity. d. Hypothyroidism, resulting in weight loss, profuse sweating and increased heart rate.

What is the function of the hormone erythropoietin? a. stimulates production of red blood cells b. stimulates muscle growth c. causes the fight-or-flight response d. causes testosterone production

The pituitary detects a rising hormone concentration in blood and inhibits the gland that is secreting the hormone. This is a ___________ feedback loop. a. positive b. negative