Question 1

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 cortisol 
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 cortisol

Question 2

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

Accepted Answer

A) gonads 
B) thymus 
C) adrenal cortex 
D) pancreas 
E) hypothalamus 
A) gonads 
B) thymus 
C) adrenal cortex 
D) pancreas 
E) hypothalamus

Question 3

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) prolactin 
A) antidiuretic hormone 
B) vasopressin 
C) somatomedin 
D) oxytocin 
E) prolactin

Question 4

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. 
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.

Question 5

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

Question 6

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. 
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.

Question 7

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 : hypothalamus 
A) releasing hormones : thalamus 
B) oxytocin : hypothalamus 
C) stimulating hormones : posterior pituitary 
D) tropic hormones : hypothalamus 
E) neurotransmitters : hypothalamus

Question 8

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

Question 9

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 hormone 
A) calcitonin only 
B) calcitrol only 
C) parathyroid hormone only 
D) both calcitonin, and oxytocin 
E) calcitonin, calcitrol, and parathyroid hormone

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

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. 
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.

Question 12

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 13

Which of the following produces the hormone calcitonin?

Accepted Answer

A) posterior pituitary 
B) pancreas 
C) adrenal medulla 
D) thyroid gland 
E) adrenal cortex 
A) posterior pituitary 
B) pancreas 
C) adrenal medulla 
D) thyroid gland 
E) adrenal cortex

Question 14

Which hormone's release is governed by GnRH?

Accepted Answer

A) thyroid hormone 
B) cortisol 
C) glucagon 
D) insulin- like growth factors 
E) sex hormones 
A) thyroid hormone 
B) cortisol 
C) glucagon 
D) insulin- like growth factors 
E) sex hormones

Question 15

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. 
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.

Question 16

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 gland 
A) paraventricular nucleus 
B) neurohypophysis 
C) adenohypophysis 
D) melanocyte 
E) pineal gland

Question 17

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

Accepted Answer

A) adrenocorticotropic hormone 
B) cortisol 
C) androgens 
D) aldosterone 
E) epinephrine 
A) adrenocorticotropic hormone 
B) cortisol 
C) androgens 
D) aldosterone 
E) epinephrine

Question 18

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. 
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.

Question 19

A releasing hormone is a type of tropic hormone.

Accepted Answer

A) True 
 B)False

Question 20

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) permissive 
A) additive 
B) submissive 
C) synergistic 
D) tropic 
E) permissive

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

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

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

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

Acromegaly is caused by a(n)

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

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

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

What are hormones that regulate the release of other hormones?

Which of the following hormones regulates plasma calcium levels?

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

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

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

Which of the following produces the hormone calcitonin?

Which hormone's release is governed by GnRH?

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

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

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

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

A releasing hormone is a type of tropic hormone.

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

Introduction to Physiology

The Cell: Structure and Function

Cell Metabolism

Cell Membrane Transport

Chemical Messengers

Nerve Cells and Electrical Signaling

Synaptic Transmission and Neural Integration

The Nervous System: Central Nervous System

The Nervous System: Sensory Systems

The Nervous System: Autonomic and Motor Systems

Muscle Physiology

The Cardiovascular System: Cardiac Function

The Cardiovascular System: Blood Vessels, Blood Flow, and Blood Pressure

The Cardiovascular System: Blood

The Respiratory System: Pulmonary Ventilation

The Respiratory System: Gas Exchange and the Regulation of Breathing

The Urinary System: Renal Function

The Urinary System: Fluid and Electrolyte Balance

The Gastrointestinal System

The Endocrine System: Regulation of Energy Metabolism and Growth

The Reproductive System

The Immune System

Diabetes Mellitus

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