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Use the following information concerning thyroid hormone secretion to determine the best answer. Normal serum levels for T3, T4, and TSH are as follows: Use the following information concerning thyroid hormone secretion to determine the best answer. Normal serum levels for T<sub>3</sub>, T<sub>4</sub>, and TSH are as follows:   Consider the following laboratory results of thyroid function and TSH levels.   -Based on these laboratory results, which patient is most likely to have the following pathological condition: Graves disease? Consider the following laboratory results of thyroid function and TSH levels. Use the following information concerning thyroid hormone secretion to determine the best answer. Normal serum levels for T<sub>3</sub>, T<sub>4</sub>, and TSH are as follows:   Consider the following laboratory results of thyroid function and TSH levels.   -Based on these laboratory results, which patient is most likely to have the following pathological condition: Graves disease? -Based on these laboratory results, which patient is most likely to have the following pathological condition: Graves disease?

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During a race, a long-distance runner twisted his ankle. He finished the race without feeling any pain in his ankle. This lack of the perception of pain could be the result of an increase in ________.


A) gonadotropins
B) lipotropins
C) somatotropins
D) epinephrine
E) beta endorphins

F) All of the above
G) C) and D)

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Match the pathological condition with its cause. -Diabetes insipidus


A) Decreased amounts of thyroid hormone
B) Increased amounts of thyroid hormone
C) Abnormally low levels of aldosterone and cortisol
D) Increased levels of growth hormone in adults
E) Lack of ADH

F) A) and B)
G) All of the above

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What is the function of thymosin?


A) Regulates metabolism
B) Development and maturation of the immune system
C) Regulates sleep cycles
D) Development and maturation of the adrenal glands

E) A) and B)
F) None of the above

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Which condition would likely have the following symptoms: polyuria, acidosis, hyponatremia, and tetany of skeletal muscles?


A) Hyposecretion of glucocorticoids
B) Hypersecretion of mineralocorticoids
C) Hyposecretion of androgens
D) Hyposecretion of mineralocorticoids

E) None of the above
F) B) and C)

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During exercise, the energy necessary to sustain skeletal muscle cell contraction comes from


A) increased insulin production.
B) increased epinephrine and glucagon release.
C) decreased sympathetic nervous system activity.
D) storing glucose as glycogen.
E) conservation of glucose.

F) A) and E)
G) C) and E)

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Which of the following are NOT an endogenously produced analgesics?


A) Interleukin-2
B) Enkephalins
C) Dynorphins
D) Endorphins

E) A) and C)
F) All of the above

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Gonadotropin-releasing hormone (GnRH) regulates the release of ________.


A) prolactin and oxytocin
B) follicle-stimulating hormone and luteinizing hormone
C) estrogen and testosterone
D) progesterone and prolactin
E) thyrotropin-releasing hormone and thyroid-stimulating hormone

F) B) and D)
G) A) and E)

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ADH (antidiuretic hormone) is also called vasopressin because at high concentrations it causes


A) increased urine output.
B) constriction of blood vessels.
C) increased potassium secretion by the kidneys.
D) decreased sodium retention by the kidneys.
E) dilation of blood vessels.

F) All of the above
G) A) and C)

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Which of the following glands is both an endocrine gland and an exocrine gland?


A) Thyroid gland
B) Adrenal gland
C) Pancreas
D) Parathyroid gland
E) Pituitary gland

F) C) and D)
G) A) and B)

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In hypocalcemia,


A) incidence of bone fractures increases.
B) muscular weakness is common.
C) cardiac arrhythmias occur.
D) constipation becomes a problem.
E) the nervous system becomes depressed.

F) A) and E)
G) D) and E)

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Synthesis of progesterone in the ovary and testosterone in the testis is stimulated by ________.


A) LH (luteinizing hormone)
B) MSH (melanocyte-stimulating hormone)
C) TSH (thyroid-stimulating hormone)
D) ACTH (adrenocorticotropic hormone)
E) FSH (follicle-stimulating hormone)

F) None of the above
G) All of the above

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A person working outside in the hot sun can perspire a great deal. This increase in perspiration results in an increase in water loss from the body. Increased water loss causes the blood osmolality to increase. This increased osmolality is "sensed" by the ________.


A) kidneys
B) osmoreceptors
C) cerebral cortex
D) anterior pituitary
E) baroreceptors

F) B) and D)
G) A) and E)

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Match the hormone with its appropriate function. -TSH


A) Stimulates synthesis of thyroid hormones
B) Increases adrenal cortex secretions
C) Development of immune system
D) Milk production
E) Decreases blood Ca2+ levels

F) None of the above
G) C) and D)

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The posterior pituitary secretes ________.


A) chiasmatic hormones
B) tropic hormones
C) transcriptional hormones
D) interstitial hormones
E) neurohormones

F) B) and D)
G) A) and B)

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Osmoreceptor cells in the hypothalamus are involved in the secretion of ________.


A) GH (growth hormone)
B) aldosterone
C) ADH (antidiuretic hormone)
D) ACTH (adrenocorticotropic hormone)
E) PTH (parathyroid hormone)

F) None of the above
G) All of the above

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The adrenal cortex


A) is derived from mesoderm.
B) is derived from neural crest cells.
C) is considered part of the sympathetic division of the autonomic nervous system.
D) secretes epinephrine.

E) A) and B)
F) None of the above

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Which endocrine gland secretions do not appear to decrease as one ages?


A) Melatonin
B) Growth hormone
C) Thyroid hormones
D) Parathyroid hormone

E) C) and D)
F) All of the above

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Which of these hormones is NOT secreted by the adrenal cortex?


A) Cortisol
B) Norepinephrine
C) Androgens
D) Aldosterone
E) Glucocorticoids

F) A) and D)
G) A) and C)

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Hypersecretion of inhibin would result in


A) decreased FSH secretion and disruption of normal reproductive cycles.
B) decreased LH secretion and the absence of spermatogenesis in males.
C) increased FSH secretion and the overproduction of ovarian follicles.
D) increased LH secretion and the overproduction of ovarian follicles.

E) All of the above
F) A) and D)

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