The anterior pituitary
a. is also known as the adenohypophysis.
b. is composed primarily of nervous tissue.
c. primarily secretes tropic hormones.
d. both (a) and (c) above.
e. all of these answers.
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Question 2) Select the incorrect association.
a. adrenal medulla/vasopressin
b. anterior pituitary/adenohypophysis
c. epinephrine/catecholamine
d. insulin/polypeptide
e. posterior pituitary/neurohypophysis
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Question 3) Which of the following hormones is released from the hypothalamus and influences metabolism?
a. CRH
b. TSH
c. GnRH
d. LH
e. GH
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Question 4) This chemical produced in the retina is important for the light-dark cycle of circadian rhythms:
a. melatonin
b. melanocortin
c. melanopsin
d. melanin
e. none of the above
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Question 5) Which of the following is not a function of melatonin?
a. induces natural sleep
b. suppresses reproductive hormones
c. plays a role in breeding behavior
d. enhances immunity
e. all of the above are functions
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Question 6) This hormone is tied to circadian rhythms:
a. GH
b. melatonin
c. FSH
d. GnRH
e. SCN
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Question 7) This is the master biological clock:
a. anterior pituitary
b. posterior pituitary
c. thyroid hormone
d. arcuate nucleus
e. suprachiasmatic nucleus
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Question 8) Melanocyte-stimulating hormones are
a. secreted by the intermediate lobe of the pituitary in some lower vertebrates.
b. known to cause skin darkening in certain lower vertebrates.
c. believed to be responsible for the tanning phenomenon in humans.
d. both (a) and (b) above.
e. all of these answers.
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Question 9) Melanocyte-stimulating hormones
a. are responsible for the deposition of melanin in the skin during the process of tanning.
b. are not present in significant amounts in adult humans.
c. are present in varying amounts in races of different skin color.
d. are important for color adaptations associated with camouflage in certain lower vertebrates.
e. are produced in the thyroid gland.
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Question 10) Melatonin is produced in which gland?
a. anterior pituitary.
b. posterior pituitary.
c. pineal.
d. hypothalamus.
e. thyroid.
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