Chapter 13

Question 1

A non specific defense – reacts one way regardless

of what kind of agent is attacking the body.

Answer 1

Innate immune system

Question 2

The study of adaptive immunity and how the
immune system responds to specific infectious
agents and toxins

Answer 2

Immunology

Question 3

Produced when a person has and recovers from an infectious disease.

Answer 3

Naturally acquired active immunity

Question 4

Immunity that develops when a person is

vaccinated.

Answer 4

Artificially acquired active immunity

Question 5

When antibodies are passed from mother to

offspring via the placenta or breast milk.

Answer 5

Naturally acquired passive immunity

Question 6

Immunity developed when antibodies are given to

a person.

Answer 6

Artificially acquired passive immunity

Question 7

A substance the body identifies as foreign and

toward which it mounts an immune response.

Answer 7

Antigen

Question 8

A protein produced in response to an antigen that is

capable of binding specifically to that antigen.

Answer 8

Antibody

Question 9

When activated (by an antigen) a T cell gives rise
to one of four different types of progeny. List these types

Answer 9

Helper T cells, Regulatory T cells, Cytotoxic T

cells, and Memory T cells

Question 10

Helper T cells function to

Answer 10

activate macrophages, assist B cell processes,

and activate cytotoxic T cells.

Question 11

Cytotoxic T cells function to

Answer 11

the destruction of virus infected cells and cancer cells

Question 12

Helper T cells have a ______ co-receptor and

recognize antigen held on ______

Answer 12

CD4,MHC II

Question 13

Cytotoxic T cells have a ______ co-receptor and

recognize antigen held on _______

Answer 13

CD8,MHC I

Question 14

These cells control other T cell responses

Answer 14

Regulatory T cells

Question 15

What are the three types of Antigen presenting

cells (APC’s)?

Answer 15

B cells, Macrophages, and Dendritic Cells.

Question 16

______will internalize the antigen, process it,
complex it with MHC-II receptors and send it to
the surface of their membrane. Here the antigen
and receptor will be presented to a helper T cell

Answer 16

Antigen presenting cells (APC’s)

Question 17

For a CD8 cytotoxic T cell to become activated it

must

Answer 17

recognize a foreign antigen combined with a

MHC-I receptor

Question 18

How do cytotoxic T cells kill virus infected cells?

Answer 18

by the release of toxic granules

Question 19

These cells lack specificity for antigens however, they
function to kill virus infected cells and cancer cells

Answer 19

Natural Killer Cells

Question 20

______cells synthesize and release antibodies

Answer 20

Plasma

Question 21

Y shaped protein molecules composed of 4 peptide

chains

Answer 21

Antibodies

Question 22

The reason why the secondary response happens so

fast is due to:

Answer 22

Memory cells that proliferate instantly and destroy
the pathogen before the onset of signs and
symptoms.