Question 1

In nonsteroid hormones,the hormone itself is the first messenger.

Accepted Answer

A) True 
 B)False

Question 2

The many hormones secreted by endocrine tissues can be classified simply as _____ hormones.

Accepted Answer

A)  steroid or nonsteroid 
B)  anabolic or catabolic 
C)  sex or nonsex 
D)  tropic or hypotropic 
A)  steroid or nonsteroid 
B)  anabolic or catabolic 
C)  sex or nonsex 
D)  tropic or hypotropic

Question 3

Steroids are able to pass easily through a target cell's plasma membrane because they are:

Accepted Answer

A)  synthesized from amino acids. 
B)  synthesized from carbohydrates. 
C)  lipid-soluble. 
D)  synthesized from nucleic acids. 
A)  synthesized from amino acids. 
B)  synthesized from carbohydrates. 
C)  lipid-soluble. 
D)  synthesized from nucleic acids.

Question 4

Match each term with its explanation or definition.
-increasing the number of receptors on a target cell

Accepted Answer

A) Synergism 
B) Steroid hormone 
C) Second messenger 
D) Target cell 
E) Up-regulation
F)Antagonism
G)Prostaglandin
H)Tropic hormone
I)Nonsteroid hormone
J)Permissiveness 
A) Synergism 
B) Steroid hormone 
C) Second messenger 
D) Target cell 
E) Up-regulation
F)Antagonism
G)Prostaglandin
H)Tropic hormone
I)Nonsteroid hormone
J)Permissiveness

Question 5

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 6

Both synergism and permissiveness can increase the effect of a hormone.

Accepted Answer

A) True 
 B)False

Question 7

Responses that result from endocrine feedback loops are called endocrine reflexes.

Accepted Answer

A) True 
 B)False

Question 8

The common molecule from which all steroid hormones are derived is:

Accepted Answer

A)  phospholipids. 
B)  cholesterol. 
C)  lecithin. 
D)  triglycerols. 
A)  phospholipids. 
B)  cholesterol. 
C)  lecithin. 
D)  triglycerols.

Question 9

All of the following are true statements except:

Accepted Answer

A)  there are at least 16 different prostaglandins. 
B)  the first prostaglandin was identified in semen. 
C)  aspirin produces some of its effects by increasing PGE synthesis. 
D)  PGFs have been used to induce labor and accelerate the delivery of a baby. 
A)  there are at least 16 different prostaglandins. 
B)  the first prostaglandin was identified in semen. 
C)  aspirin produces some of its effects by increasing PGE synthesis. 
D)  PGFs have been used to induce labor and accelerate the delivery of a baby.

Question 10

If a small amount of hormone produced a disproportionately great response in a cell,the hormone was most likely a nonsteroid hormone.

Accepted Answer

A) True 
 B)False

Question 11

Compare and contrast how the endocrine and nervous systems function to maintain homeostasis of the internal environment.

Accepted Answer

The endocrine and nervous systems both p

Question 12

The term down-regulation refers to the:

Accepted Answer

A)  decrease in hormone production as we age. 
B)  negative-feedback system or 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 or 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 13

The target organs for tropic hormones are usually other endocrine glands.

Accepted Answer

A) True 
 B)False

Question 14

Match each chemical classification with a corresponding hormone.
-cortisol

Accepted Answer

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

Question 15

Explain the mechanism of steroid hormone action.What is the end product of a steroid hormone?

Accepted Answer

Steroid hormones exert their effects by

Question 16

In areas of the body where circulation is poor,hormones are carried by small ducts called hormone channels.

Accepted Answer

A) True 
 B)False

Question 17

The general effect of hormones is to produce regulatory changes within the target cell.

Accepted Answer

A) True 
 B)False

Question 18

Match each term with its explanation or definition.
-the combination of hormones have a greater effect than the sum of the effects of the two hormones separately

Accepted Answer

A) Synergism 
B) Steroid hormone 
C) Second messenger 
D) Target cell 
E) Up-regulation
F)Antagonism
G)Prostaglandin
H)Tropic hormone
I)Nonsteroid hormone
J)Permissiveness 
A) Synergism 
B) Steroid hormone 
C) Second messenger 
D) Target cell 
E) Up-regulation
F)Antagonism
G)Prostaglandin
H)Tropic hormone
I)Nonsteroid hormone
J)Permissiveness

Question 19

The specific role of cAMP is to activate kinases.

Accepted Answer

A) True 
 B)False

Question 20

The last step in the nonsteroid hormone mechanism of action is:

Accepted Answer

A)  joining with the G protein on the cell membrane. 
B)  protein kinases activate other enzymes. 
C)  adenyl cyclase is activated. 
D)  cAMP is formed. 
A)  joining with the G protein on the cell membrane. 
B)  protein kinases activate other enzymes. 
C)  adenyl cyclase is activated. 
D)  cAMP is formed.

Exam 18: Endocrine System

In nonsteroid hormones,the hormone itself is the first messenger.

The many hormones secreted by endocrine tissues can be classified simply as _____ hormones.

Steroids are able to pass easily through a target cell's plasma membrane because they are:

Match each term with its explanation or definition. -increasing the number of receptors on a target cell

Which of the following statements is false?

Both synergism and permissiveness can increase the effect of a hormone.

Responses that result from endocrine feedback loops are called endocrine reflexes.

The common molecule from which all steroid hormones are derived is:

All of the following are true statements except:

If a small amount of hormone produced a disproportionately great response in a cell,the hormone was most likely a nonsteroid hormone.

Compare and contrast how the endocrine and nervous systems function to maintain homeostasis of the internal environment.

The term down-regulation refers to the:

The target organs for tropic hormones are usually other endocrine glands.

Match each chemical classification with a corresponding hormone. -cortisol

Explain the mechanism of steroid hormone action.What is the end product of a steroid hormone?

In areas of the body where circulation is poor,hormones are carried by small ducts called hormone channels.

The general effect of hormones is to produce regulatory changes within the target cell.

Match each term with its explanation or definition. -the combination of hormones have a greater effect than the sum of the effects of the two hormones separately

The specific role of cAMP is to activate kinases.

The last step in the nonsteroid hormone mechanism of action is:

A: Organization of the Body

B: Organization of the Body

A: The Chemical Basis of Life

B: The Chemical Basis of Life

A: Anatomy of Cells

B: Anatomy of Cells

Physiology of Cells

Cell Growth and Reproduction

Tissues

A: Skin and Its Appendages

B: Skin and Its Appendages

A: Skeletal Tissues

B: Skeletal Tissues

Skeletal System

A: Articulations

B: Articulations

A: Anatomy of the Muscular System

B: Anatomy of the Muscular System

A: Physiology of the Muscular System

B: Physiology of the Muscular System

A: Nervous System Cells

B: Nervous System Cells

A: Central Nervous System

B: Central Nervous System

Peripheral Nervous System

Autonomic Nervous System

A: Sense Organs

B: Sense Organs

Endocrine Glands

Blood

Anatomy of the Cardiovascular System

A: Physiology of the Cardiovascular System

B: Physiology of the Cardiovascular System

Lymphatic System

A: Immune System

B: Immune System

Stress

Anatomy of the Respiratory System

A: Physiology of the Respiratory System

B: Physiology of the Respiratory System

A: Anatomy of the Digestive System

B: Anatomy of the Digestive System

A: Physiology of the Digestive System

B: Physiology of the Digestive System

A: Nutrition and Metabolism

B: Nutrition and Metabolism

A: Urinary System

B: Urinary System

Fluid and Electrolyte Balance

Acid-Base Balance

Male Reproductive System

A: Female Reproductive System

B: Female Reproductive System

A: Growth and Development

B: Growth and Development

A: Genetics and Heredity

B: Genetics and Heredity

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