PRACTICE QUESTIONS

1. The other main hormone secreted by the thyroid gland, in addition to tetraiodothyronine and triiodothyronine, is:

a. Calcitonin

b. Insulin

c. Parathyroid hormone

d.

e. Somatostatin

2. The most important function of mineralocorticoids is control of:

a. Carbohydrate metabolism

b. Glucose metabolism

c. Electrolyte metabolism

d. Protein metabolism

3. The pancreas has four types of cells, each of which pro­duce a specific hormone. For example, the Ot cells of the pancreas produce:

a. Insulin

b. Glucagon

c. Somatostatin

d. Pancreatic polypeptide

4. Two hormones play an important role in calcium

homeostasis. The two hormones, ________________________ and

_________________________, cause an increase and a decrease in calcium concentrations, respectively:

a. calcitonin; glucagon

b. somatostatin; calcitonin

c. calcitonin; parathyroid hormone

d. parathyroid hormone; calcitonin

e. parathyroid hormone; glucagon

5. The main functions of the catecholamines are to allow

rapid body responses to acute stimuli, which include the mobilization of glucose. The catecholamines are secreted by the sympathetic portion of the autonomic nervous system. The hormone is the main

neurotransmitter of the sympathetic nervous system, whereas is the main hormone

produced by the postganglionic fibers of the adrenal medulla.

a. serotonin; epinephrine

b. epinephrine; serotonin

c. epinephrine; norepinephrine

d. norepinephrine; epinephrine

e. serotonin; melatonin