PRACTICE QUESTIONS

1. In general, hormones are classified as proteins, peptides, and steroids. Which one of the following hormones is a peptide?

a. Growth hormone

b. Insulin

c. Vasopressin

d.

e. Epinephrine

f. Melatonin

2. In general, steroid hormones are classified as mineralo­corticoid, glucocorticoid, and sex steroids. Which one of the following hormones is a glucocorticoid?

a. Aldosterone

b. Corticosterone

c. Cortisol

d. Testosterone

e. Estrone

3. Direct feedback control of corticotropin-releasing hormone by corticotropin is termed:

a. Negative feedback

b. Positive feedback

c. Short-Ioop feedback

d. Long-loop feedback

4. Hormones from the pro-opiomelanocortin family are syn­thesized from precursor hormones produced in either the pars distalis or the pars intermedia. The two main hormones produced by these two lobes (in respective order) are:

a. α-MSH and endorphin

b. Corticotropin and endorphin

c. α-MSH and corticotropin

d. Corticotropin and α-MSH

e. Corticotropin and (X-Iipotropin

5. Increased hormonal activity that occurs during daylight

hours is termed_____________________ rhythm.

a. Circadian

b. Diurnal

c. Nocturnal

d. Ultradian