Lymphatic System

Question 1

If the thymus failed to produce thymic hormones, what population of lymphocytes would be affected?

Answer 1

T lymphocytes

Question 2

Why do lymph nodes enlarge during some infections?

Answer 2

Due to phagocytic and lymphatic cell division

Question 3

What is a dangerous consequence of lymphedema in a limb?

Answer 3

accumulation of toxins and pathogens due to stagnant interstitial fluids

Question 4

What effects to pyrogens have in the body?

Answer 4

Increase temperature/cause fever

Question 5

What are the characteristics or functions of nonspecific defenses?

Answer 5

present at birth, destruction of abnormal cells by NK cells, and interferons coordinating defenses against viral infections

Question 6

How do interferons increase resistance to viral infections?

Answer 6

They interfere with viral replication inside the cells

Question 7

Why would the liver, lungs, and CNS be affected by a low monocyte count in blood?

Answer 7

Kupffer cells, alveolar macrophages, and microglia are derived from monocytes

Question 8

What is not an effect of complement activation?

Answer 8

Reducing inflammation

Question 9

A decrease in the number of cytotoxic T cells directly affects which type of immunity?

Answer 9

cell-mediated immunity

Question 10

The spleen is ____.

Answer 10

a fragile organ that can rupture easily, the site where red blood cells are recycled, and the site where B and T cells can respond to antigens in circulating blood.

Question 11

What correctly describes the sequence of WBCs responsible for overcoming an infection?

Answer 11

Neutrophils and NK cells -> phagocytes/cytotoxic T cells -> plasma cells

Question 12

How is the secondary response affected if memory B cells for a particular antigen are absent?

Answer 12

The secondary response would not occur.

Question 13

How does the absence of helper T cells affect the antibody-mediated immune response?

Answer 13

Neither B cells nor T cells are stimulated to respond to a pathogen; therefore, no immune response occurs

Question 14

What conditions can be determined with a skin test?

Answer 14

If a person has been exposed to an antigen

Question 15

Which kind of immunity protects a developing fetus, and how is that immunity produced?

Answer 15

Natural passive immunity; the transfer of IgG antibodies from the mother to the fetus through the placenta.

Question 16

Who is the sexiest mother fucker you know and love?

Answer 16

Kim Cain <3

Question 17

The formation of an antigen-antibody complex may cause elimination of the antigen in what way?

Answer 17

the antibody binds to a site on a virus making the toxin incapable of attaching itself to a cell, an antibody binds to antigenic determinant sites on two different antigens, and antigens covered with antibodies attract phagocytes

Question 18

Artificially acquired passive immunity ____, while artificially acquired active immunity ____.

Answer 18

is conferred by administration of antibodies; develops after administration of an antigen to prevent disease.

Question 19

Which analogy is most appropriate for comparing the interaction of an antibody’s active site binding with an antigen?

Answer 19

An enzyme interacting with a substrate molecule.

Question 20

A tumor cell has developed and begun to divide in Amy’s liver. What type of immune cells will be able to detect and kill the tumor cells?

Answer 20

natural killer cells

Question 21

David suffers from rheumatoid arthritis. What is the term for this type of immune disorder?

Answer 21

autoimmune disease

Question 22

What are the best medications to use for tissue rejection in organ transplants?

Answer 22

cyclosporine A because it will decrease helper T cells

Question 23

How can the presence of an abnormal peptide in the cytoplasm of a cell initiate an immune response?

Answer 23

by becoming attached to NHC and being presented to T cells.

Question 24

Denise is allergic to pollen. What is an allergy and how is allergy to pollen classified?

Answer 24

an inappropriate or exaggerated immune response; immediate hypersensitivity

Question 25

Why is having both cell-mediated and antibody-mediated immunity integral to a healthy immune system?

Answer 25

T cells defend against pathogens inside cells, while B cells defend against antigens in body fluids.