Question 1

Surface barriers, such as cutaneous and mucous membranes, serve the immune system as the:

Accepted Answer

A)   third line of defense.
B)   first line of defense.
C)   second line of defense.
D)   fourth line of defense.

Question 2

Explain the role of major histocompatibility complex (MHC) molecules in T cell activation.

Accepted Answer

T cell activation begins with a cell processing and displaying antigen fragments on its MHC molecules. It then presents the antigen to a particular T cell clone, which is specific for its individual MHC ^-antigen complex. When the T cell receptor recognizes and binds this complex, multiple changes are triggered inside the T cell and the process of activation begins. This process is known as clonal selection because the antigen "selects" a particular T cell clone. Full T cell activation requires the interaction of the T cell with other molecules on the cells called co ^-stimulators.

Question 3

What type of non -phagocytic cell mediates inflammation?

Accepted Answer

A)   basophil
B)   neutrophil
C)   eosinophil
D)   natural killer (NK)  cell

Question 4

The lymph ducts in the thoracic cavity drain into the:

Accepted Answer

A)   junction of the internal jugular vein and subclavian vein.
B)   junction of the brachiocephalic vein and the superior vena cava.
C)   inferior vena cava.
D)   external jugular veins.

Question 5

Lymph capillaries form a two -way system that moves lymph to and from the heart.

Accepted Answer

A) True 
 B)False  False

Question 6

What cells decline in number during the final phase of HIV -1 infection, when an individual is said to have AIDS?

Accepted Answer

A)   memory B cells
B)   helper T (TH)  cells
C)   plasma cells
D)   B cells

Question 7

Self antigens usually generate an immune response in our own bodies.

Accepted Answer

A) True 
 B)False

Question 8

Adaptive, or specific, immunity consists of antimicrobial proteins and certain cells that respond quickly to pathogens within the first 12 hours after exposure.

Accepted Answer

A) True 
 B)False

Question 9

Explain how a type I, or immediate, hypersensitivity is different from a typical primary immune response.

Accepted Answer

Type I, or immediate, hypersensitivity r...

Question 10

Lymph traveling from the right arm will be filtered by:

Accepted Answer

A)   inguinal lymph nodes.
B)   cervical lymph nodes.
C)   mesenteric lymph nodes.
D)   axillary lymph nodes.

Question 11

During the second stage of the inflammatory response, what do neutrophils accomplish when they migrate to areas of damaged tissue?

Accepted Answer

A)   Neutrophils destroy bacteria and other cellular debris.
B)   Neutrophils increase capillary permeability.
C)   Neutrophils are potent vasodilators.
D)   Neutrophils interfere with the ability of viruses or bacteria to infect other cells.

Question 12

Blood transfusions between incompatible blood types results in:

Accepted Answer

A)   type II, or antibody -mediated, hypersensitivity.
B)   type I, or immediate, hypersensitivity.
C)   type III, or immune -complex mediated, hypersensitivity.
D)   type IV, or delayed -type, hypersensitivity.

Question 13

Cells that help regulate the immune response are:

Accepted Answer

A)   cytotoxic T (T
C)   cells.
B)   CD8 cells.
C)   helper T (TH)  cells.
D)   major histocompatibility complex (MH
C)   molecules.

Question 14

IgM is the first antibody secreted by plasma cells when the body is invaded by a pathogen.

Accepted Answer

A) True 
 B)False

Question 15

The clumping of cells that are cross -linked by their attachments to antibodies is known as:

Accepted Answer

A)   agglutination.
B)   precipitation.
C)   neutralization.
D)   opsonization.

Question 16

Bill first had the influenza vaccine in October. He experienced a headache, achiness, fatigue, and a fever.
When he came into contact with the influenza virus a few months later, he hardly had any symptoms at all. Explain these two different immune responses seen with each exposure to the virus.

Accepted Answer

The primary immune response began with B...

Question 17

T cells directly interact with antigens without other cells involved.

Accepted Answer

A) True 
 B)False  False

Question 18

Which antibody is NOT secreted by B cells in significant amounts?

Accepted Answer

A)   IgD
B)   IgG
C)   IgE
D)   IgM

Question 19

Describe the functions of the lymphatic system.

Accepted Answer

The lymphatic system has several functio...

Question 20

If the thymus shrank and stopped making hormones in a child, we would expect to see a decrease in the number of:

Accepted Answer

A)   eosinophils.
B)   T lymphocytes (T cells) .
C)   neutrophils.
D)   B lymphocytes (B cells) .

Exam 20: The Lymphatic System Immunity

Surface barriers, such as cutaneous and mucous membranes, serve the immune system as the:

Correct Answer
verified

Explain the role of major histocompatibility complex (MHC) molecules in T cell activation.

What type of non ^-phagocytic cell mediates inflammation?

Correct Answer
verified

The lymph ducts in the thoracic cavity drain into the:

Correct Answer
verified

Lymph capillaries form a two ^-way system that moves lymph to and from the heart.

Correct Answer
verified
False

What cells decline in number during the final phase of HIV ^-1 infection, when an individual is said to have AIDS?

Correct Answer
verified

Self antigens usually generate an immune response in our own bodies.

Correct Answer
verified

Adaptive, or specific, immunity consists of antimicrobial proteins and certain cells that respond quickly to pathogens within the first 12 hours after exposure.

Correct Answer
verified

Explain how a type I, or immediate, hypersensitivity is different from a typical primary immune response.

Correct Answer
verified
Type I, or immediate, hypersensitivity r...
View Answer

Lymph traveling from the right arm will be filtered by:

Correct Answer
verified

During the second stage of the inflammatory response, what do neutrophils accomplish when they migrate to areas of damaged tissue?

Correct Answer
verified

Blood transfusions between incompatible blood types results in:

Correct Answer
verified

Cells that help regulate the immune response are:

Correct Answer
verified

IgM is the first antibody secreted by plasma cells when the body is invaded by a pathogen.

Correct Answer
verified

The clumping of cells that are cross ^-linked by their attachments to antibodies is known as:

Correct Answer
verified

Bill first had the influenza vaccine in October. He experienced a headache, achiness, fatigue, and a fever. When he came into contact with the influenza virus a few months later, he hardly had any symptoms at all. Explain these two different immune responses seen with each exposure to the virus.

Correct Answer
verified
The primary immune response began with B...
View Answer

T cells directly interact with antigens without other cells involved.

Correct Answer
verified
False

Which antibody is NOT secreted by B cells in significant amounts?

Correct Answer
verified

Describe the functions of the lymphatic system.

Correct Answer
verified
The lymphatic system has several functio...
View Answer

If the thymus shrank and stopped making hormones in a child, we would expect to see a decrease in the number of:

Correct Answer
verified

Exam 20: The Lymphatic System Immunity

Surface barriers, such as cutaneous and mucous membranes, serve the immune system as the:

Correct AnswerverifiedShow Answer

Explain the role of major histocompatibility complex (MHC) molecules in T cell activation.

What type of non -phagocytic cell mediates inflammation?

Correct AnswerverifiedShow Answer

The lymph ducts in the thoracic cavity drain into the:

Correct AnswerverifiedShow Answer

Lymph capillaries form a two -way system that moves lymph to and from the heart.

Correct AnswerverifiedFalse

What cells decline in number during the final phase of HIV -1 infection, when an individual is said to have AIDS?

Correct AnswerverifiedShow Answer

Self antigens usually generate an immune response in our own bodies.

Correct AnswerverifiedShow Answer

Adaptive, or specific, immunity consists of antimicrobial proteins and certain cells that respond quickly to pathogens within the first 12 hours after exposure.

Correct AnswerverifiedShow Answer

Explain how a type I, or immediate, hypersensitivity is different from a typical primary immune response.

Correct AnswerverifiedType I, or immediate, hypersensitivity r...View AnswerShow Answer

Lymph traveling from the right arm will be filtered by:

Correct AnswerverifiedShow Answer

During the second stage of the inflammatory response, what do neutrophils accomplish when they migrate to areas of damaged tissue?

Correct AnswerverifiedShow Answer

Blood transfusions between incompatible blood types results in:

Correct AnswerverifiedShow Answer

Cells that help regulate the immune response are:

Correct AnswerverifiedShow Answer

IgM is the first antibody secreted by plasma cells when the body is invaded by a pathogen.

Correct AnswerverifiedShow Answer

The clumping of cells that are cross -linked by their attachments to antibodies is known as:

Correct AnswerverifiedShow Answer

Bill first had the influenza vaccine in October. He experienced a headache, achiness, fatigue, and a fever. When he came into contact with the influenza virus a few months later, he hardly had any symptoms at all. Explain these two different immune responses seen with each exposure to the virus.

Correct AnswerverifiedThe primary immune response began with B...View AnswerShow Answer

T cells directly interact with antigens without other cells involved.

Correct AnswerverifiedFalse

Which antibody is NOT secreted by B cells in significant amounts?

Correct AnswerverifiedShow Answer

Describe the functions of the lymphatic system.

Correct AnswerverifiedThe lymphatic system has several functio...View AnswerShow Answer

If the thymus shrank and stopped making hormones in a child, we would expect to see a decrease in the number of:

Correct AnswerverifiedShow Answer

Correct Answer
verified

What type of non ^-phagocytic cell mediates inflammation?

Correct Answer
verified

Correct Answer
verified

Lymph capillaries form a two ^-way system that moves lymph to and from the heart.

Correct Answer
verified
False

What cells decline in number during the final phase of HIV ^-1 infection, when an individual is said to have AIDS?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Type I, or immediate, hypersensitivity r...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The clumping of cells that are cross ^-linked by their attachments to antibodies is known as:

Correct Answer
verified

Correct Answer
verified
The primary immune response began with B...
View Answer

Correct Answer
verified
False

Correct Answer
verified

Correct Answer
verified
The lymphatic system has several functio...
View Answer

Correct Answer
verified