13.    An inadequate intake ofiodine in the diet can

a.
lead to hyperthyroidism
b.
cause Graves disease
c.
cause exophthalmos
d.
cause a goiter

    14.    Which of thefollowing is true of parathyroid hormone?

a.
It is made in the thyroid gland.
b.
It decreases the amount of calcium in the blood.
c.
It increases the amount of calcium in the blood.
d.
It stimulates the formation of bone.

    15.    Which of thefollowing is not true of glucocorticoids?

a.
They are produced in the adrenal cortex.
b.
They help regulate the blood sodium and potassium level.
c.
They increase the amount of glucose in the blood throughgluconeogenesis.
d.
They have an antiallergy effect.

    16.    Which of thefollowing is not true of the adrenal medulla?

a.
It responds to stimuli from the sympathetic nervous system.
b.
It helps produce the “fight-or-flight” response.
c.
It releases epinephrine.
d.
All of the above are true of the adrenal medulla.

    17.    Which ofthese is not a symptom of Cushing syndrome?

a.
moon face
b.
buffalo hump
c.
virilization in women
d.
All of the above are symptoms of Cushing syndrome.

    18.    Which of thefollowing statements is true?

a.
The alpha cells of the pancreas secrete insulin.
b.
Hypersecretion of insulin causes diabetes mellitus.
c.
Insulin causes an increase in the blood sugar level.
d.
Glucagon and insulin are antagonists of each other.