Thyroid hormones
a. regulate basal metabolic rate.
b. released from the thyroid gland immediately after synthesis.
c. contain chromium and zinc as structural cofactors.
d. are tropic.
e. none of these answers.
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Question 2) The endocrine gland that secretes hormones containing iodine is the
a. adrenal cortex.
b. adrenal medulla.
c. pancreas
d. thyroid.
e. thymus.
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Question 3) Which of the following are masculinizing hormones produced from the adrenal gland?
a. growth hormone
b. androgens
c. thyroid hormone
d. cortisol
e. insulin
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Question 4) Which of the following factors does not increase growth hormone secretion?
a. deep sleep
b. exercise
c. low blood amino acid level
d. stress
e. low blood glucose level
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Question 5) Osteoblasts
a. secrete the organic matrix components of bone.
b. become osteocytes once they become entrapped in the bone that they form.
c. dissolve bone.
d. form cartilage.
e. both (a) and (b) above.
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Question 6) Dwarfism may be the result of a deficiency of
a. growth-hormone releasing hormone.
b. GH.
c. somatomedins.
d. both GH and somatomedins are correct.
e. all of these answers.
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Question 7) Growth hormone exerts its effects on growth
a. by stimulating production of somatomedins.
b. by directly invoking gene activity.
c. by elevating blood glucose levels.
d. by increasing fat metabolism.
e. by increasing thyroid hormone levels.
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Question 8) To exert its metabolic effects, GH
a. interacts with the liver to produce intermediary signaling compounds
b. interacts directly with target organs
c. acts indirectly by stimulating insulin-like growth factor
d. promotes hypertrophy and hyperplasia of soft tissue and bone
e. none of the above
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Question 9) In addition to GH, other hormones including the following are essential for normal growth:
a. insulin
b. thyroid hormone
c. androgens
d. estrogen
e. all of these answers.
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Question 10) Chemical messengers like IGF-1 are released from the liver in response to
a. increased plasma growth hormone levels.
b. increased plasma somatostatin levels.
c. decreased plasma growth hormone levels.
d. decreased plasma somatostatin levels.
e. elevated levels of blood sugar.
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