Question 1

Endocrine glands release their hormones into ducts that eventually empty into the circulatory system.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following nonsteroid hormones bind to receptors associated with a DNA molecule within the nucleus of the target cell?

Accepted Answer

A) Thyroxine 
B) Triiodothyronine 
C) Prolactin 
D) Both A and B 
A) Thyroxine 
B) Triiodothyronine 
C) Prolactin 
D) Both A and B

Question 3

The term downregulation refers to the:

Accepted Answer

A) decrease in hormone production as we age. 
B) negative-feedback system of hormone regulation. 
C) reduction of the number of hormone receptors in a cell. 
D) movement of regulating hormones from the hypothalamus down to the pituitary gland. 
A) decrease in hormone production as we age. 
B) negative-feedback system of hormone regulation. 
C) reduction of the number of hormone receptors in a cell. 
D) movement of regulating hormones from the hypothalamus down to the pituitary gland.

Question 4

Which of the following is not true of steroid hormones?

Accepted Answer

A) They are lipid-soluble. 
B) They are derived from a fatty acid molecule. 
C) They can pass through the cell membrane. 
D) All of the above are true about steroid hormones. 
A) They are lipid-soluble. 
B) They are derived from a fatty acid molecule. 
C) They can pass through the cell membrane. 
D) All of the above are true about steroid hormones.

Question 5

Explain how a cell can upregulate or downregulate its response to the presence of a hormone.

Accepted Answer

The answer of Explain how a cell can upregulate or...

Question 6

Some endocrine glands are actually made of nervous tissue.

Accepted Answer

A) True 
 B)False

Question 7

Match each chemical classification with a corresponding hormone.
-Somatostatin

Accepted Answer

A) Steroid 
B) Protein 
C) Glycoprotein 
D) Peptide 
E) Amine 
A) Steroid 
B) Protein 
C) Glycoprotein 
D) Peptide 
E) Amine

Question 8

Synergism in hormone activity can be defined as:

Accepted Answer

A) one hormone causing the opposite effect of another hormone. 
B) two hormones working together to enhance each other's impact on a target cell. 
C) a small amount of one hormone allowing another hormone to have its full effect. 
D) none of the above; hormones do not work synergistically. 
A) one hormone causing the opposite effect of another hormone. 
B) two hormones working together to enhance each other's impact on a target cell. 
C) a small amount of one hormone allowing another hormone to have its full effect. 
D) none of the above; hormones do not work synergistically.

Question 9

Examples of steroid hormones are cortisol, aldosterone, and testosterone.

Accepted Answer

A) True 
 B)False

Question 10

The specific role of cAMP is to activate kinases.

Accepted Answer

A) True 
 B)False

Question 11

If the cellular response to a hormone caused an increase in RNA synthesis, the hormone most likely was a steroid hormone.

Accepted Answer

A) True 
 B)False

Question 12

Thyroid hormones are nonsteroid hormones but act more like steroid hormones when they reach their target cells.

Accepted Answer

A) True 
 B)False

Question 13

In comparison with the nervous system, the regulatory effects of the endocrine system are rapidly apparent, but short-lived.

Accepted Answer

A) True 
 B)False

Question 14

Chemically, steroid hormones are derived from the cholesterol molecule.

Accepted Answer

A) True 
 B)False

Question 15

One of the later effects of steroid hormones on the cell could be the:

Accepted Answer

A) transcription of RNA. 
B) making of enzymes. 
C) formation of cAMP. 
D) activation of kinases. 
A) transcription of RNA. 
B) making of enzymes. 
C) formation of cAMP. 
D) activation of kinases.

Question 16

Explain how cAMP acts as a second messenger for certain nonsteroid hormones.

Accepted Answer

When certain nonsteroid hormones, such a

Question 17

Which of the following statements is false?

Accepted Answer

A) Both the nervous system and endocrine system use chemicals to send messages. 
B) For the nervous and endocrine systems to function, the receiving cells must have the correct type of receptors. 
C) Cells can have receptors for hormones or for neurotransmitters but not for both. 
D) The nervous and endocrine systems can be seen as one system-the neuroendocrine system. 
A) Both the nervous system and endocrine system use chemicals to send messages. 
B) For the nervous and endocrine systems to function, the receiving cells must have the correct type of receptors. 
C) Cells can have receptors for hormones or for neurotransmitters but not for both. 
D) The nervous and endocrine systems can be seen as one system-the neuroendocrine system.

Question 18

The nuclear-receptor model is used in describing the action of steroid hormones.

Accepted Answer

A) True 
 B)False

Question 19

A hormone that stimulates the salivary glands (exocrine glands) would be a tropic hormone.

Accepted Answer

A) True 
 B)False

Question 20

The cAMP system, the inositol triphosphate (IP₃) system, and the mobile-receptor system are second-messenger systems used by nonsteroid hormones.

Accepted Answer

A) True 
 B)False

Exam 25: Endocrine Regulation

Endocrine glands release their hormones into ducts that eventually empty into the circulatory system.

Which of the following nonsteroid hormones bind to receptors associated with a DNA molecule within the nucleus of the target cell?

The term downregulation refers to the:

Which of the following is not true of steroid hormones?

Explain how a cell can upregulate or downregulate its response to the presence of a hormone.

Some endocrine glands are actually made of nervous tissue.

Match each chemical classification with a corresponding hormone. -Somatostatin

Synergism in hormone activity can be defined as:

Examples of steroid hormones are cortisol, aldosterone, and testosterone.

The specific role of cAMP is to activate kinases.

If the cellular response to a hormone caused an increase in RNA synthesis, the hormone most likely was a steroid hormone.

Thyroid hormones are nonsteroid hormones but act more like steroid hormones when they reach their target cells.

In comparison with the nervous system, the regulatory effects of the endocrine system are rapidly apparent, but short-lived.

Chemically, steroid hormones are derived from the cholesterol molecule.

One of the later effects of steroid hormones on the cell could be the:

Explain how cAMP acts as a second messenger for certain nonsteroid hormones.

Which of the following statements is false?

The nuclear-receptor model is used in describing the action of steroid hormones.

A hormone that stimulates the salivary glands (exocrine glands) would be a tropic hormone.

The cAMP system, the inositol triphosphate (IP₃) system, and the mobile-receptor system are second-messenger systems used by nonsteroid hormones.

Organization of the Body

Homeostasis

Chemistry of Life

Biomolecules

Cell Structure

Cell Function

Cell Growth and Development

Introduction to Tissues

Tissue Types

Skin

Skeletal Tissues

Axial Skeleton

Appendicular Skeleton

Articulations

Axial Muscles

Appendicular Muscles

Muscle Contraction

Nervous System Cells

Nerve Signaling

Central Nervous System

Peripheral Nervous System

Autonomic Nervous System

General Senses

Special Senses

Endocrine Glands

Blood

Heart

Blood Vessels

Circulation of the Blood

Lymphatic System

Innate Immunity

Adaptive Immunity

Stress

Respiratory Tract

Ventilation

Gas Exchange Transport

Upper Digestive Tract

Lower Digestive Tract

Digestion and Absorption

Nutrition and Metabolism

Urinary System

Fluid and Electrolyte Balance

Acid-Base Balance

Male Reproductive System

Female Reproductive System

Growth, Development, and Aging

Genetics and Heredity

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