Question 1

Complete each of the following statments.
____________________ refers to the chemical attraction of leukocytes to the site of invasion.

Accepted Answer

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

Question 2

Complete each of the following statments.
B and T cells that are no longer needed undergo ____________________ to ensure that a specific immune response is self-limiting.

Accepted Answer

The answer of Complete each of the following statments.
B and...

Question 3

Complete each of the following statments.
Humoral immunity involves the production of ____________________ by B lymphocyte derivatives.

Accepted Answer

The answer of Complete each of the following statments.
Humoral immunity...

Question 4

Which of the following statements about cancer cells is incorrect?

Accepted Answer

A)  They arise only when multiple independent mutations occur within the same cell. 
B)  They lack the ability to perform the specialized functions of the normal cell-type from which they mutated. 
C)  The body has no means by which to defend against them. 
D)  They usually do not adhere well to neighboring cells, so some of them may break away from the parent tumor. 
E)  They arise only when multiple independent mutations occur within the same cell, and they usually do not adhere well to neighboring cells, so some of them may break away from the parent tumor. 
A)  They arise only when multiple independent mutations occur within the same cell. 
B)  They lack the ability to perform the specialized functions of the normal cell-type from which they mutated. 
C)  The body has no means by which to defend against them. 
D)  They usually do not adhere well to neighboring cells, so some of them may break away from the parent tumor. 
E)  They arise only when multiple independent mutations occur within the same cell, and they usually do not adhere well to neighboring cells, so some of them may break away from the parent tumor.

Question 5

Complete each of the following statments.
____________________ in an infected wound is a collection of phagocytic cells, dead tissue liquefied by enzymes released from the phagocytic cells, and bacteria.

Accepted Answer

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

Question 6

Plasma cells

Accepted Answer

A)  are not derived from B cells 
B)  have an expanded rough endoplasmic reticulum 
C)  do not secrete antibodies but remain dormant and expand the clone specific for the invading antigen 
D)  are not derived from B cells and have an expanded rough endoplasmic reticulum 
E)  all of these 
A)  are not derived from B cells 
B)  have an expanded rough endoplasmic reticulum 
C)  do not secrete antibodies but remain dormant and expand the clone specific for the invading antigen 
D)  are not derived from B cells and have an expanded rough endoplasmic reticulum 
E)  all of these

Question 7

Which of the following is not a means by which viruses can lead to cellular damage or death?

Accepted Answer

A)  release by the virus of enzymes or toxins that physically injure or disrupt affected cells 
B)  depletion of essential cellular components by the virus 
C)  cellular production of substances toxic to the cell under the dictatorship of the virus 
D)  transformation of normal host cells into cancer cells 
E)  incorporation of the virus into the cell so that the body's own defense mechanisms no longer recognize the cell as part of "normal self" and destroy it 
A)  release by the virus of enzymes or toxins that physically injure or disrupt affected cells 
B)  depletion of essential cellular components by the virus 
C)  cellular production of substances toxic to the cell under the dictatorship of the virus 
D)  transformation of normal host cells into cancer cells 
E)  incorporation of the virus into the cell so that the body's own defense mechanisms no longer recognize the cell as part of "normal self" and destroy it

Question 8

Complete each of the following statments.
A carcinogenic factor causes ____________________.

Accepted Answer

The answer of Complete each of the following statments.
A carcinogenic...

Question 9

Specific immune responses

Accepted Answer

A)  require helper T-cell activation 
B)  are under control of the adaptive immune system 
C)  could not occur if the thymus gland did not develop 
D)  require recognition of antigens by receptors 
E)  all of these 
A)  require helper T-cell activation 
B)  are under control of the adaptive immune system 
C)  could not occur if the thymus gland did not develop 
D)  require recognition of antigens by receptors 
E)  all of these

Question 10

Chemicals other than antibodies secreted by lymphocytes are collectively known as

Accepted Answer

A)  cytokines 
B)  antigens 
C)  opsonins 
D)  complement factors 
E)  lymphogenous mediators 
A)  cytokines 
B)  antigens 
C)  opsonins 
D)  complement factors 
E)  lymphogenous mediators

Question 11

Complete each of the following statments.
____________________ are lymphocyte-like cells that nonspecifically destroy virus-infected cells and tumor cells.

Accepted Answer

Natural ki

Question 12

Interferon

Accepted Answer

A)  is released from viruses 
B)  triggers the production of viral-blocking enzymes by cells that have not yet been invaded by viruses 
C)  directly breaks down viral messenger RNA 
D)  inhibits protein synthesis, both of which are essential for viral replication 
E)  triggers the production of viral-blocking enzymes by cells that have not yet been invaded by viruses and inhibits protein synthesis, both of which are essential for viral replication 
A)  is released from viruses 
B)  triggers the production of viral-blocking enzymes by cells that have not yet been invaded by viruses 
C)  directly breaks down viral messenger RNA 
D)  inhibits protein synthesis, both of which are essential for viral replication 
E)  triggers the production of viral-blocking enzymes by cells that have not yet been invaded by viruses and inhibits protein synthesis, both of which are essential for viral replication

Question 13

The spleen clears the lymph that passes through it of bacteria and other foreign matter.

Accepted Answer

A) True 
 B)False

Question 14

Complete each of the following statments.
The T lymphocyte lineage undergoes maturational processing and differentiation in the ____________________.

Accepted Answer

The answer of Complete each of the following statments.
The T...

Question 15

Saliva is destructive to bacteria because it is highly acidic.

Accepted Answer

A) True 
 B)False

Question 16

Which cell type in the epidermis produces a pigment that absorbs ultraviolet light?

Accepted Answer

A)  keratinocyte 
B)  melanocyte 
C)  Langerhans cell 
D)  Granstein cell 
E)  sebaceous cell 
A)  keratinocyte 
B)  melanocyte 
C)  Langerhans cell 
D)  Granstein cell 
E)  sebaceous cell

Question 17

B lymphocytes are involved with immediate hypersensitivity reactions, whereas T lymphocytes are involved with delayed hypersensitivity reactions.

Accepted Answer

A) True 
 B)False

Question 18

Complete each of the following statments.
A(n) ____________________ is a large, complex molecule that triggers an immune response against itself.

Accepted Answer

The answer of Complete each of the following statments.
A(n) ____________________...

Question 19

Complete each of the following statments.
It is thought that fever may be beneficial to fighting an infection because it reduces the availability of ____________________, thus reducing bacterial growth.

Accepted Answer

The answer of Complete each of the following statments.
It is...

Question 20

Complete each of the following statments.
____________________ is the process by which a substance separates from a solution.

Accepted Answer

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

Exam 12: Body Defenses

Complete each of the following statments. ____________________ refers to the chemical attraction of leukocytes to the site of invasion.

Complete each of the following statments. B and T cells that are no longer needed undergo ____________________ to ensure that a specific immune response is self-limiting.

Complete each of the following statments. Humoral immunity involves the production of ____________________ by B lymphocyte derivatives.

Which of the following statements about cancer cells is incorrect?

Complete each of the following statments. ____________________ in an infected wound is a collection of phagocytic cells, dead tissue liquefied by enzymes released from the phagocytic cells, and bacteria.

Plasma cells

Which of the following is not a means by which viruses can lead to cellular damage or death?

Complete each of the following statments. A carcinogenic factor causes ____________________.

Specific immune responses

Chemicals other than antibodies secreted by lymphocytes are collectively known as

Complete each of the following statments. ____________________ are lymphocyte-like cells that nonspecifically destroy virus-infected cells and tumor cells.

Interferon

The spleen clears the lymph that passes through it of bacteria and other foreign matter.

Complete each of the following statments. The T lymphocyte lineage undergoes maturational processing and differentiation in the ____________________.

Saliva is destructive to bacteria because it is highly acidic.

Which cell type in the epidermis produces a pigment that absorbs ultraviolet light?

B lymphocytes are involved with immediate hypersensitivity reactions, whereas T lymphocytes are involved with delayed hypersensitivity reactions.

Complete each of the following statments. A(n) ____________________ is a large, complex molecule that triggers an immune response against itself.

Complete each of the following statments. It is thought that fever may be beneficial to fighting an infection because it reduces the availability of ____________________, thus reducing bacterial growth.

Complete each of the following statments. ____________________ is the process by which a substance separates from a solution.

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

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

A--Principles of Endocrinology: the Central Endocrine Glands

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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