Question 1

The magnitude of response at the target cell depends on both the concentration of hormone and the concentration of receptor.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following changes in plasma levels would be observed in a primary hyposecretion of cortisol?

Accepted Answer

A)  decreased CRH, decreased ACTH, and decreased cortisol
B)  decreased CRH, decreased ACTH, and increased cortisol
C)  increased CRH, increased ACTH, and decreased cortisol
D)  increased CRH, increased ACTH, and increased cortisol
E)  increased CRH, decreased ACTH, and decreased cortisolF) B) and E)
G) A) and E)

Question 3

Which of the following hormones is NOT released from the adrenal gland?

Accepted Answer

A)  adrenocorticotropic hormone
B)  cortisol
C)  androgens
D)  aldosterone
E)  epinephrineF) C) and E)
G) B) and D)

Question 4

The concentration of free hormone in the blood depends on all of the following EXCEPT the

Accepted Answer

A)  rate of hormone secretion.
B)  amount of hormone temporarily stored in adipose tissue.
C)  amount of hormone transported bound to carrier proteins.
D)  rate of receptor downregulation.
E)  rate at which the hormone is metabolized.F) All of the above
G) D) and E)

Question 5

What are hormones that regulate the release of other hormones?

Accepted Answer

A)  stimulatory hormones
B)  release regulating hormones
C)  secondary hormones
D)  primary hormones
E)  tropic hormonesF) A) and E)
G) A) and B)

Question 6

Which of the following correctly describes a pathway for secretion of a hormone under the control of tropic hormones?

Accepted Answer

A)  TRH stimulates TSH release, which stimulates thymosin release.
B)  CRH stimulates ACTH release, which stimulates somatomedin release.
C)  PRH stimulates PH release, which stimulates prolactin release.
D)  GnRH stimulates PH release, which stimulates prolactin release.
E)  GHRH stimulates GH release, which stimulates insulin- like growth factor release.F) A) and B)
G) D) and E)

Question 7

Which of the following produces the hormone calcitonin?

Accepted Answer

A)  posterior pituitary
B)  pancreas
C)  adrenal medulla
D)  thyroid gland
E)  adrenal cortexF) A) and E)
G) A) and C)

Question 8

The mechanism of insulin catabolism in target cells is best described as degradation by

Accepted Answer

A)  peroxisomal enzymes.
B)  lysosomes following receptor- mediated endocytosis.
C)  insulin- degrading enzyme following receptor- mediated endocytosis.
D)  proteases in the extracellular fluid.
E)  mitochondrial enzymes following receptor- mediated endocytosis.F) A) and C)
G) A) and D)

Question 9

Acromegaly is caused by a(n)

Accepted Answer

A)  cortisol deficiency.
B)  decrease of insulin- like growth factors.
C)  decrease in growth hormone in adults.
D)  thyroid deficiency.
E)  increase in growth hormone in adults.F) A) and E)
G) All of the above

Question 10

What is another name for the posterior lobe of the pituitary gland?

Accepted Answer

A)  paraventricular nucleus
B)  neurohypophysis
C)  adenohypophysis
D)  melanocyte
E)  pineal glandF) B) and C)
G) A) and B)

Question 11

A hormone is when a second hormone is required for the first hormone to have any activity.

Accepted Answer

A)  additive
B)  submissive
C)  synergistic
D)  tropic
E)  permissiveF) A) and E)
G) None of the above

Question 12

Which of the following is a CORRECT example of long- loop negative feedback?

Accepted Answer

A)  GH stimulates the release of GHIH.
B)  TSH inhibits the release of TRH.
C)  TSH stimulates the release of TRH.
D)  Glucocorticoids inhibit the release of CRH.
E)  FSH inhibits the release of GnRH.F) A) and D)
G) D) and E)

Question 13

Which of the following tropic hormones is also known as the catecholamine, dopamine?

Accepted Answer

A)  growth hormone
B)  luteinizing hormone
C)  prolactin inhibiting hormone
D)  growth hormone inhibiting hormone
E)  prolactin releasing hormoneF) B) and D)
G) A) and B)

Question 14

A releasing hormone is a type of tropic hormone.

Accepted Answer

A) True 
 B)False

Question 15

What hormone, released by the posterior pituitary, functions in uterine contraction and milk letdown in the breast?

Accepted Answer

A)  antidiuretic hormone
B)  vasopressin
C)  somatomedin
D)  oxytocin
E)  prolactinF) A) and B)
G) C) and D)

Question 16

Growth hormone has direct action on target cells throughout the body.

Accepted Answer

A) True 
 B)False

Question 17

Which hormone's release is governed by GnRH?

Accepted Answer

A)  thyroid hormone
B)  cortisol
C)  glucagon
D)  insulin- like growth factors
E)  sex hormonesF) All of the above
G) B) and E)

Question 18

Which of the following hormones regulates plasma calcium levels?

Accepted Answer

A)  calcitonin only
B)  calcitrol only
C)  parathyroid hormone only
D)  both calcitonin, and oxytocin
E)  calcitonin, calcitrol, and parathyroid hormoneF) A) and E)
G) None of the above

Question 19

Which of the following endocrine organs essentially secretes hormones from neurons?

Accepted Answer

A)  gonads
B)  thymus
C)  adrenal cortex
D)  pancreas
E)  hypothalamusF) B) and C)
G) All of the above

Question 20

Secretion of hormones from the anterior pituitary is stimulated by released from the .

Accepted Answer

A)  releasing hormones : thalamus
B)  oxytocin : hypothalamus
C)  stimulating hormones : posterior pituitary
D)  tropic hormones : hypothalamus
E)  neurotransmitters : hypothalamusF) All of the above
G) B) and C)

Exam 6: The Endocrine System: Endocrine Glands and Hormone Actions

The magnitude of response at the target cell depends on both the concentration of hormone and the concentration of receptor.

Correct AnswerverifiedShow Answer

Which of the following correctly describes a pathway for secretion of a hormone under the control of tropic hormones?

Correct AnswerverifiedShow Answer

What is another name for the posterior lobe of the pituitary gland?

Correct AnswerverifiedShow Answer

Acromegaly is caused by a(n)

Correct AnswerverifiedShow Answer

Which of the following produces the hormone calcitonin?

Correct AnswerverifiedShow Answer

Which of the following is a CORRECT example of long- loop negative feedback?

Correct AnswerverifiedShow Answer

Which of the following hormones regulates plasma calcium levels?

Correct AnswerverifiedShow Answer

Which hormone's release is governed by GnRH?

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A releasing hormone is a type of tropic hormone.

Correct AnswerverifiedShow Answer

Growth hormone has direct action on target cells throughout the body.

Correct AnswerverifiedShow Answer

Secretion of hormones from the anterior pituitary is stimulated by released from the .

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What hormone, released by the posterior pituitary, functions in uterine contraction and milk letdown in the breast?

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Which of the following hormones is NOT released from the adrenal gland?

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Which of the following tropic hormones is also known as the catecholamine, dopamine?

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Which of the following endocrine organs essentially secretes hormones from neurons?

Correct AnswerverifiedShow Answer

A hormone is when a second hormone is required for the first hormone to have any activity.

Correct AnswerverifiedShow Answer

The mechanism of insulin catabolism in target cells is best described as degradation by

Correct AnswerverifiedShow Answer

Which of the following changes in plasma levels would be observed in a primary hyposecretion of cortisol?

Correct AnswerverifiedShow Answer

What are hormones that regulate the release of other hormones?

Correct AnswerverifiedShow Answer

The concentration of free hormone in the blood depends on all of the following EXCEPT the

Correct AnswerverifiedShow Answer

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