The precursor to testosterone is
a. aldosterone.
b. cortisol.
c. dehydroepiandrosterone.
d. estradiol.
e. testosterone.
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Question 2) The most abundant and physiologically important adrenal sex hormone is
a. aldosterone.
b. cortisol.
c. dehydroepiandrosterone.
d. estradiol.
e. testosterone.
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Question 3) Which of the following statements concerning adrenocortical hormones is incorrect?
a. the glucocorticoids are examples.
b. some are steroids.
c. they are all controlled primarily by TSH.
d. they are secreted from the outer layer of the adrenal gland.
e. aldosterone is a mineralocorticoid.
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Question 4) The zona glomerulosa of the adrenal cortex secretes
a. aldosterone.
b. cortisol.
c. androgens and estrogens.
d. both (b) and (c) above.
e. all of these answers.
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Question 5) Which of the following is not characteristic of hypothyroidism?
a. depressed MR
b. depressed body temperature
c. exopthalmos
d. cretinism
e. myxedema
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Question 6) Which of the following is a byproduct of neonatal hypothyroidism?
a. elevated BMR
b. elevated body temperature
c. Grave's disease
d. cretinism
e. type I diabetes mellitus
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Question 7) Which of the following would not decrease thyroid hormone production?
a. a decrease in TSH production.
b. an iodine deficient diet.
c. an increase in TRH production.
d. inhibition of the iodine pump.
e. removal of the pituitary.
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Question 8) With regards to thyroid hormone secretion
a. the anterior pituitary controls daily regulation while the hypothalamus controls long term patterns of secretion.
b. TSH causes TRH to be secreted which in tern stimulates T3 and T4 release.
c. thyroid hormone negatively feedback to the hypothalamus.
d. control is primarily neural.
e. all of these answers.
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Question 9) TSH
a. is stimulated by thyrotropin-releasing hormone (TRH).
b. is inhibited by T3 and T4.
c. increases the rate of thyroid hormone secretion.
d. promotes hypertrophy and hyperplasia of thyroid cells.
e. all of these answers.
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Question 10) Which of the following is not an effect of thyroid hormone?
a. increased metabolic rate.
b. increased tissue responsiveness to catecholamines.
c. increased absorption of iodine from the digestive tract into the blood.
d. normal growth.
e. normal development of the nervous system.
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