Question 1

Inhibition of G-proteins would cause an increase in hormone-induced intracellular Ca2+ concentrations.

Accepted Answer

A) True 
 B)False

Question 2

What element is necessary for production of thyroxine?

Accepted Answer

A)  sodium
B)  calcium
C)  iodine
D)  chlorineE) A) and B)
F) A) and C)

Question 3

Which of the following is NOT one of the three stages in the response to stress?

Accepted Answer

A)  stage of exhaustion
B)  alarm reaction
C)  stage of denial
D)  stage of resistanceE) B) and D)
F) None of the above

Question 4

Skin wound healing would be slowed due to a lack of ____________ growth factors.

Accepted Answer

A)  nerve
B)  endothelin
C)  epidermal
D)  plateletE) A) and B)
F) A) and C)

Question 5

Elevated secretion of ACTH,as in Addison's disease,causes a darkening of the skin because ACTH is related to MSH which causes production of the pigment melanin.

Accepted Answer

A) True 
 B)False

Question 6

What is the cause of pituitary cachexia?

Accepted Answer

A)  over-secretion of growth hormone in adults
B)  over-secretion of prolactin in adults
C)  deficiency of growth hormone in adults
D)  deficiency of growth hormone in childrenE) B) and C)
F) A) and B)

Question 7

Prolactin injections may be used to induce labor.

Accepted Answer

A) True 
 B)False

Question 8

What is NOT an effect of taking exogenous glucocorticoids?

Accepted Answer

A)  increased immune response
B)  hyperglycemia and decreased glucose tolerance
C)  decreased inflammation
D)  osteoporosisE) A) and D)
F) B) and C)

Question 9

Pheochromocytomas would stimulate

Accepted Answer

A)  hypersecretion of aldosterone.
B)  hypersecretion of cortisol.
C)  hypersecretion of adrenocorticotropin.
D)  hypersecretion of epinephrine and norepinephrine.E) B) and D)
F) B) and C)

Question 10

Lipophilic hormones travel in the blood bonded to carrier proteins.

Accepted Answer

A) True 
 B)False

Question 11

The same prostaglandin may produce different effects in different tissues.

Accepted Answer

A) True 
 B)False

Question 12

Second messengers generated by the actions of phospholipase C

Accepted Answer

A)  are inhibited by the actions of caffeine.
B)  are stimulated by phosphodiesterases.
C)  may activate calmodulin.
D)  stimulate gene transcription.E) A) and B)
F) A) and D)

Question 13

Blood vessel diameter is regulated by all of the following EXCEPT

Accepted Answer

A)  nitric oxide.
B)  bradykinin.
C)  endothelin.
D)  platelet-derived growth factor.E) B) and C)
F) A) and B)

Question 14

Steroid hormone receptors form a ____ on their DNA half-sites.

Accepted Answer

A)  homodimer
B)  autodimer
C)  pseudodimer
D)  heterodimerE) A) and B)
F) B) and C)

Question 15

Cycles of physiological activity that follow a 24-hour pattern are called

Accepted Answer

A)  circadian rhythms.
B)  biomemetic rhythms.
C)  psychological rhythms.
D)  cerebral rhythms.E) A) and B)
F) A) and C)

Question 16

Most polypeptide and protein hormones are synthesized as prohormones.

Accepted Answer

A) True 
 B)False

Question 17

Inhibition of phosphodiesterase would potentially increase the effects of hormones that activate adenylate cyclase.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following is NOT true about a chemical functioning in physiological regulation

Accepted Answer

A)  There must be a mechanism to turn off the chemical's action.
B)  The chemicals must be secreted by endocrine glands.
C)  Target cell must have specific receptor molecules for the chemical.
D)  The combination of the chemical and its receptor must cause specific changes to occur in the target cell.E) B) and D)
F) A) and D)

Question 19

Polypeptide hormones are synthesized from tyrosine and tryptophan.

Accepted Answer

A) True 
 B)False

Question 20

The zona glomerulosa of the adrenal cortex secretes the mineralocorticoids.

Accepted Answer

A) True 
 B)False

Exam 11: Endocrine Glands: Secretion and Action of Hormones

What element is necessary for production of thyroxine?

Correct AnswerverifiedShow Answer

What is the cause of pituitary cachexia?

Correct AnswerverifiedShow Answer

Lipophilic hormones travel in the blood bonded to carrier proteins.

Correct AnswerverifiedShow Answer

Second messengers generated by the actions of phospholipase C

Correct AnswerverifiedShow Answer

The same prostaglandin may produce different effects in different tissues.

Correct AnswerverifiedShow Answer

Inhibition of G-proteins would cause an increase in hormone-induced intracellular Ca2+ concentrations.

Correct AnswerverifiedShow Answer

Elevated secretion of ACTH,as in Addison's disease,causes a darkening of the skin because ACTH is related to MSH which causes production of the pigment melanin.

Correct AnswerverifiedShow Answer

Steroid hormone receptors form a ____ on their DNA half-sites.

Correct AnswerverifiedShow Answer

Prolactin injections may be used to induce labor.

Correct AnswerverifiedShow Answer

Which of the following is NOT one of the three stages in the response to stress?

Correct AnswerverifiedShow Answer

Polypeptide hormones are synthesized from tyrosine and tryptophan.

Correct AnswerverifiedShow Answer

Skin wound healing would be slowed due to a lack of ____________ growth factors.

Correct AnswerverifiedShow Answer

Pheochromocytomas would stimulate

Correct AnswerverifiedShow Answer

Inhibition of phosphodiesterase would potentially increase the effects of hormones that activate adenylate cyclase.

Correct AnswerverifiedShow Answer

Most polypeptide and protein hormones are synthesized as prohormones.

Correct AnswerverifiedShow Answer

Which of the following is NOT true about a chemical functioning in physiological regulation

Correct AnswerverifiedShow Answer

Blood vessel diameter is regulated by all of the following EXCEPT

Correct AnswerverifiedShow Answer

The zona glomerulosa of the adrenal cortex secretes the mineralocorticoids.

Correct AnswerverifiedShow Answer

Cycles of physiological activity that follow a 24-hour pattern are called

Correct AnswerverifiedShow Answer

What is NOT an effect of taking exogenous glucocorticoids?

Correct AnswerverifiedShow Answer

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Inhibition of G-proteins would cause an increase in hormone-induced intracellular Ca²⁺ concentrations.

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