Question 1

A 50-year-old male patient is deficient in ADH production. Which of the following would be an expected symptom?

Accepted Answer

A)   Increased blood volume
B)   Increased urine osmolality
C)   Increased urine volume
D)   Increased arterial vasoconstrictionE) All of the above
F) B) and C)

Question 2

The most potent naturally occurring glucocorticoid is:

Accepted Answer

A)   aldosterone.
B)   testosterone.
C)   cortisol.
D)   prolactin.E) B) and D)
F) C) and D)

Question 3

A 15-year-old male took an illicit drug that acts by directly inhibiting phenylethanolamine N-methyltransferase. Secretion of which of the following hormones would be inhibited?

Accepted Answer

A)   Dopamine
B)   Epinephrine
C)   Norepinephrine
D)   TyrosineE) B) and D)
F) B) and C) B

Question 4

The hormone whose action leads to receptor autophosphorylation and activation of tyrosine kinase is:

Accepted Answer

A)   GH.
B)   PRL.
C)   insulin.
D)   estrogen.E) B) and C)
F) A) and B)

Question 5

Target cell receptors for most water-soluble hormones are located in the:

Accepted Answer

A)   cytosol.
B)   cell membrane.
C)   endoplasmic reticulum.
D)   nucleus.E) A) and C)
F) A) and B)

Question 6

Aldosterone secretion is regulated by:

Accepted Answer

A)   the sympathetic nervous system.
B)   adrenocorticotropic hormone (ACTH) .
C)   the renin-angiotension system.
D)   positive feedback control systems.E) A) and B)
F) B) and D)

Question 7

A 50-year-old male with one kidney had to undergo surgery for an adrenal tumor. His zona glomerulosa was largely removed during the surgery. Which of the following would most likely occur?

Accepted Answer

A)   Hypernatremia
B)   Dehydration
C)   Hypokalemia
D)   AlkalosisE) A) and B)
F) A) and C)

Question 8

Which of the following alterations would slow down the rate of parathyroid hormone secretion?

Accepted Answer

A)   Increased serum calcium levels
B)   Decreased serum calcium levels
C)   Decreased levels of TSH
D)   Increased levels of TSHE) C) and D)
F) A) and B)

Question 9

An essential ingredient for thyroid hormone synthesis is:

Accepted Answer

A)   zinc.
B)   sodium.
C)   iodine.
D)   calcium.E) None of the above
F) A) and C)

Question 10

Adrenocorticotropic hormone (ACTH)  release can be stimulated by:

Accepted Answer

A)   high serum levels of cortisol.
B)   hypotension.
C)   hypoglycemia.
D)   stress.E) A) and B)
F) A) and C)

Question 11

A 39-year-old female underwent surgery to remove an adrenal tumor. To completely remove it, the zona glomerulosa had to be removed. Secretion of which of the following hormones would be expected to decrease?

Accepted Answer

A)   Aldosterone
B)   Cortisol
C)   Epinephrine
D)   TestosteroneE) A) and B)
F) A) and D)

Question 12

The releasing hormones that are made in the hypothalamus travel to the anterior pituitary via the:

Accepted Answer

A)   vessels of the zona fasciculata.
B)   neurons in the infundibular stem.
C)   median eminence and pars nervosa.
D)   hypophysial portal system.E) B) and D)
F) B) and C) D

Question 13

When insulin binds to its receptors on muscle cells, an increase in glucose uptake by the muscle cells occurs. This is an example of a _____ effect by a hormone.

Accepted Answer

A)   pharmacologic
B)   permissive
C)   synergistic
D)   directE) B) and D)
F) A) and D)

Question 14

A 30-year-old male is diagnosed with a hormone-secreting tumor of the pancreas alpha cells. Which of the following would most likely be increased in this patient?

Accepted Answer

A)   Amylin
B)   Glucagon
C)   Insulin
D)   SomatostatinE) B) and C)
F) A) and C)

Question 15

Catecholamines promote:

Accepted Answer

A)   nutrient absorption.
B)   fluid retention.
C)   hypotension.
D)   hyperglycemia.E) C) and D)
F) All of the above

Question 16

Antidiuretic hormone (ADH)  release from the posterior pituitary is stimulated by:

Accepted Answer

A)   low blood pressure sensed by baroreceptors in the kidneys.
B)   high serum osmolarity sensed by osmoreceptors in the hypothalamus.
C)   low osmolarity sensed by osmoreceptors in the kidneys.
D)   high concentration of potassium sensed by chemoreceptors in the carotid body.E) B) and C)
F) All of the above

Question 17

Target cells for oxytocin are located in the:

Accepted Answer

A)   renal tubules.
B)   thymus.
C)   liver.
D)   uterus.E) All of the above
F) A) and B)

Question 18

Which of the following hormones is secreted by the adrenal medulla?

Accepted Answer

A)   Cortisol
B)   Epinephrine
C)   Androgens
D)   EstrogensE) C) and D)
F) None of the above

Question 19

Which of the following is a protein hormone?

Accepted Answer

A)   Thyroxine (T4) 
B)   Aldosterone
C)   Testosterone
D)   InsulinE) B) and C)
F) A) and D) D

Question 20

Regulation of the release of epinephrine from the adrenal medulla is an example of _____ regulation.

Accepted Answer

A)   negative feedback
B)   positive feedback
C)   neural
D)   substrate level dependentE) All of the above
F) B) and D)

Exam 17: Mechanisms of Hormonal Regulation

A 50-year-old male patient is deficient in ADH production. Which of the following would be an expected symptom?

Correct AnswerverifiedShow Answer

The most potent naturally occurring glucocorticoid is:

Correct AnswerverifiedShow Answer

A 15-year-old male took an illicit drug that acts by directly inhibiting phenylethanolamine N-methyltransferase. Secretion of which of the following hormones would be inhibited?

Correct AnswerverifiedB

The hormone whose action leads to receptor autophosphorylation and activation of tyrosine kinase is:

Correct AnswerverifiedShow Answer

Target cell receptors for most water-soluble hormones are located in the:

Correct AnswerverifiedShow Answer

Aldosterone secretion is regulated by:

Correct AnswerverifiedShow Answer

A 50-year-old male with one kidney had to undergo surgery for an adrenal tumor. His zona glomerulosa was largely removed during the surgery. Which of the following would most likely occur?

Correct AnswerverifiedShow Answer

Which of the following alterations would slow down the rate of parathyroid hormone secretion?

Correct AnswerverifiedShow Answer

An essential ingredient for thyroid hormone synthesis is:

Correct AnswerverifiedShow Answer

Adrenocorticotropic hormone (ACTH) release can be stimulated by:

Correct AnswerverifiedShow Answer

A 39-year-old female underwent surgery to remove an adrenal tumor. To completely remove it, the zona glomerulosa had to be removed. Secretion of which of the following hormones would be expected to decrease?

Correct AnswerverifiedShow Answer

The releasing hormones that are made in the hypothalamus travel to the anterior pituitary via the:

Correct AnswerverifiedD

When insulin binds to its receptors on muscle cells, an increase in glucose uptake by the muscle cells occurs. This is an example of a _____ effect by a hormone.

Correct AnswerverifiedShow Answer

A 30-year-old male is diagnosed with a hormone-secreting tumor of the pancreas alpha cells. Which of the following would most likely be increased in this patient?

Correct AnswerverifiedShow Answer

Catecholamines promote:

Correct AnswerverifiedShow Answer

Antidiuretic hormone (ADH) release from the posterior pituitary is stimulated by:

Correct AnswerverifiedShow Answer

Target cells for oxytocin are located in the:

Correct AnswerverifiedShow Answer

Which of the following hormones is secreted by the adrenal medulla?

Correct AnswerverifiedShow Answer

Which of the following is a protein hormone?

Correct AnswerverifiedD

Regulation of the release of epinephrine from the adrenal medulla is an example of _____ regulation.

Correct AnswerverifiedShow Answer

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D

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D

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