The parathyroid glands produce PTH, a regulator of serum calcium.
Which hormone inhibits the secretion of growth hormone (GH)?
a. Somatostatin
b. Thyroxine
c. Thyroid-stimulating hormone
d. Calcitonin ✔✔CORRECT ANSWER✔✔c. Thyroid-stimulating hormone
Two hormones from the hypothalamus control GH secretion: (1) GH-
releasing hormone (GHRH), which increases GH secretion; and (2)
somatostatin, which inhibits it.
Target cells for parathyroid hormone are located in the:
a. Tubules of nephrons
b. Thyroid gland
c. Glomeruli of nephrons
d. Smooth and skeletal muscles ✔✔CORRECT ANSWER✔✔a. Tubules of
nephrons
2|Page
,Parathyroid hormone acts on its plasma membrane receptor only in the
distal and proximal tubules of the kidney's nephron.
Which compound or hormone is secreted by the adrenal medulla?
a. Cortisol
b. Epinephrine
c. Androgens
d. Aldosterone ✔✔CORRECT ANSWER✔✔b. Epinephrine
Of the available options, the catecholamine epinephrine (adrenaline) is
the only major product secreted.
The secretion of adrenocorticotropic-stimulating hormone (ACTH) will
result in the increased level of which hormone?
a. Thyroxine
b. Insulin
c. Cortisol.
d. Antidiuretic hormone ✔✔CORRECT ANSWER✔✔c. Cortisol.
3|Page
, Psychologic and physiologic stress (e.g., hypoxia, hypoglycemia,
hyperthermia, exercise) increases ACTH secretion, leading to increased
cortisol levels.
Which is an expected hormonal change in an older patient?
a. Thyroid-stimulating hormone secretion below normal
b. Triiodothyronine level below normal
c. Cortisol level below normal
d. Adrenocorticotropic hormone level above normal ✔✔CORRECT
ANSWER✔✔a. Thyroid-stimulating hormone secretion below normal
Aging causes overall thyroid-stimulating hormone secretion to diminish
but does not bring about the other changes.
The common cause of elevated levels of antidiuretic hormone (ADH)
secretion is:
a. Ectopically produced ADH
b. Inflammation of the hypothalamus
c. Posterior pituitary tumor
d. Inflammation of the nephrons ✔✔CORRECT ANSWER✔✔a.
Ectopically produced ADH
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