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Question 1

Which of the following statements is NOT the meaning of specificity, in relation to immunity?

Answer 1

-Cells of adaptive immunity recognize particular substances

Question 2

____ are lymphocytes that mature in the bone marrow, whereas ___ are lymphocytes that mature in the thymus.

Answer 2

-B Cells; T Cells

Question 3

Which of the following statements concerning lymph is TRUE?

Answer 3

-Lymph is formed from excess interstitial fluid that fails to reenter the blood circulation.

Question 4

One of the primary functions of the spleen is to

Answer 4

-Filter the blood

Question 5

__ T cells are responsible for cell-mediated immunity

Answer 5

-Cytotoxic

Question 6

___ are substances either introduced to the body or produced by the body that stimulate adaptive immunity responses

Answer 6

-Antigen

Question 7

Which of the following functions of the lymphatic system ensures that tissues are not damaged due to accumulation of excess fluid?

Answer 7

-Fluid Balance

Question 8

Which of the following is an example of how a person acquires an active natural immunity?

Answer 8

-Jessica contracted chicken pox in the first grade

Question 9

The structures that filter lymph are called __

Answer 9

-Lymph Nodes

Question 10

__ occurs when the immune system is exposed to an antigen to which it has previously responded

Answer 10

-Both secondary response and memory response are correct

Question 11

Due to __ the immune system responds faster and more strongly to a particular pathogen that the body has already encountered

Answer 11

-Memory

Question 12

__ crosses the placenta to provide immune protection to the fetus and newborn

Answer 12

-IgG

Question 13

Which of the following statements best represents coordination among the various components of the immune system?

Answer 13

-Helper T cells stimulate B cells and cytotoxic T cells to respond to pathogens and release substances that increase phagocytosis by neutrophils and macrophages

Question 14

Which of the following statements is NOT the meaning of specificity, in relation to immunity?

Answer 14

-Only the t lymphocytes response to virus infected cells

Question 15

_____ are administered to stimulate the immune system to produce memory cells for a particular pathogen.

Answer 15

-Vaccines

Question 16

Lymphatic vessels carry lymph

Answer 16

-From the peripheral tissues to large veins in the thorax

Question 17

As a person ages, much of the tissue of the thymus is replaced with adipose tissue. This affects the immune system by

Answer 17

Reducing the number of mature t cells produced

Question 18

Which of these statements concerning white blood count is correct?

Answer 18

-Leukemia is type of cancer that results in abnormal production of one or more types of leukocyte.

Question 19

Elliot has not been well since his last camping trip. He went to the clinic where the physician ran several blood tests. His test results indicated elevation of the number of eosinophils. Which of the following may explain Elliot’s Illness?

Answer 19

-Elliot may have contracted some some type of worm parasite

Question 20

When you are in a cold environment, your nose and ears turn red because blood flow increases

Answer 20

-To carry warmth to the cold tissue, reducing tissue damage

Question 21

A substance has been identified that stimulates the production of platelets. What is the most likely target of this substance?

Answer 21

-Megakaryocytes

Question 22

A physician would like to stimulate proliferation of helper T cells in one of his patients. Which of the following is most likely to lead to his desired effect?

Answer 22

-Increasing the number of MHC class II molecules and healthy cells