Question 1

Secretion of epinephrine from the adrenal medulla is under the effect of the sympathetic nervous system.

Accepted Answer

A) True 
 B)False  True

Question 2

Neurosecretory neurons

Accepted Answer

A)  release neurotransmitters 
B)  release hormones 
C)  are unable to conduct action potentials, unlike ordinary neurons 
D)  release neurotransmitters and hormones 
E)  all of these 
A)  release neurotransmitters 
B)  release hormones 
C)  are unable to conduct action potentials, unlike ordinary neurons 
D)  release neurotransmitters and hormones 
E)  all of these B

Question 3

Specialization of target-cell receptors explains the specificity of hormonal action.

Accepted Answer

A) True 
 B)False  True

Question 4

Which of the following hormone types does not require membrane receptors to invoke cell responses?

Accepted Answer

A)  peptides 
B)  catecholamines 
C)  steroids 
D)  thyroid hormone 
E)  steroids and thyroid hormone 
A)  peptides 
B)  catecholamines 
C)  steroids 
D)  thyroid hormone 
E)  steroids and thyroid hormone

Question 5

Complete each of the following statments.
With ____________________, one hormone must be present in adequate amounts for the full exertion of another hormone's effect.

Accepted Answer

The answer of Complete each of the following statments.
With ____________________,...

Question 6

Cholesterol is a common precursor for polypeptide hormones.

Accepted Answer

A) True 
 B)False

Question 7

Hypophysiotropic-hormone secretion by the hypothalamus is regulated only by hormonal negative feedback.

Accepted Answer

A) True 
 B)False

Question 8

Once synthesized, all hormones are stored within the endocrine cell until an appropriate signal arrives for their release.

Accepted Answer

A) True 
 B)False

Question 9

Which class(es) of hormones uses second-messenger systems?

Accepted Answer

A)  proteins 
B)  catecholamines 
C)  steroids 
D)  thyroid hormone 
E)  proteins and catecholamines 
A)  proteins 
B)  catecholamines 
C)  steroids 
D)  thyroid hormone 
E)  proteins and catecholamines

Question 10

Melatonin is an antioxidant that

Accepted Answer

A)  accelerates metabolism 
B)  defends against free radicals 
C)  lowers the concentration of blood sugar 
D)  serves as a secondary messenger 
E)  stimulates reduction reactions 
A)  accelerates metabolism 
B)  defends against free radicals 
C)  lowers the concentration of blood sugar 
D)  serves as a secondary messenger 
E)  stimulates reduction reactions

Question 11

Lipophilic hormones must interact with which of the following prior to gene activation?

Accepted Answer

A)  membrane receptors 
B)  G-proteins 
C)  intracellular receptors 
D)  adenylate cyclase 
E)  both intracellular receptors and adenylate cyclase 
A)  membrane receptors 
B)  G-proteins 
C)  intracellular receptors 
D)  adenylate cyclase 
E)  both intracellular receptors and adenylate cyclase

Question 12

The transport of lipid-soluble hormones in the blood is accomplished by

Accepted Answer

A)  loose binding with albumin 
B)  specific binding to plasma proteins 
C)  as HDLs 
D)  loose binding with albumin and specific binding to plasma proteins 
E)  none of these 
A)  loose binding with albumin 
B)  specific binding to plasma proteins 
C)  as HDLs 
D)  loose binding with albumin and specific binding to plasma proteins 
E)  none of these

Question 13

A single endocrine gland may produce many hormones.

Accepted Answer

A) True 
 B)False

Question 14

Insulin is produced as a precursor for another hormone.

Accepted Answer

A) True 
 B)False

Question 15

Epinephrine produces diverse effects on the activity of smooth muscle.

Accepted Answer

A) True 
 B)False

Question 16

Complete each of the following statments.
____________________ are hormones derived from the amino acid tyrosine.

Accepted Answer

The answer of Complete each of the following statments.
____________________ are...

Question 17

The thyroid hormone produces growth-promoting effects directly.

Accepted Answer

A) True 
 B)False

Question 18

Tropic hormones only target other glands.

Accepted Answer

A) True 
 B)False

Question 19

Which class of hormones triggers the synthesis of new intracellular proteins within the target cell?

Accepted Answer

A)  peptides 
B)  catecholamines 
C)  steroids 
D)  thyroid hormone 
E)  steroids and thyroid hormone 
A)  peptides 
B)  catecholamines 
C)  steroids 
D)  thyroid hormone 
E)  steroids and thyroid hormone

Question 20

The anterior pituitary is involved in the regulation of reproduction.

Accepted Answer

A) True 
 B)False

Exam 18: A--Principles of Endocrinology: the Central Endocrine Glands

Secretion of epinephrine from the adrenal medulla is under the effect of the sympathetic nervous system.

Neurosecretory neurons

Specialization of target-cell receptors explains the specificity of hormonal action.

Which of the following hormone types does not require membrane receptors to invoke cell responses?

Complete each of the following statments. With ____________________, one hormone must be present in adequate amounts for the full exertion of another hormone's effect.

Cholesterol is a common precursor for polypeptide hormones.

Hypophysiotropic-hormone secretion by the hypothalamus is regulated only by hormonal negative feedback.

Once synthesized, all hormones are stored within the endocrine cell until an appropriate signal arrives for their release.

Which class(es) of hormones uses second-messenger systems?

Melatonin is an antioxidant that

Lipophilic hormones must interact with which of the following prior to gene activation?

The transport of lipid-soluble hormones in the blood is accomplished by

A single endocrine gland may produce many hormones.

Insulin is produced as a precursor for another hormone.

Epinephrine produces diverse effects on the activity of smooth muscle.

Complete each of the following statments. ____________________ are hormones derived from the amino acid tyrosine.

The thyroid hormone produces growth-promoting effects directly.

Tropic hormones only target other glands.

Which class of hormones triggers the synthesis of new intracellular proteins within the target cell?

The anterior pituitary is involved in the regulation of reproduction.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

A--The Central Nervous System

B--The Central Nervous System

A--The Peripheral Nervous System: Afferent Division; Special Senses

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

A--Cardiac Physiology

B--Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

A--The Respiratory System

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

A--The Digestive System

B--The Digestive System

Energy Balance and Temperature Regulation

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

A--The Reproductive System

B--The Reproductive System

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