Lecture 12: Part 3

Question 1

What are the 3 types of leukocytes?

Answer 1

Leukocytes (white blood cells)

1. ) Lymphocytes
2. ) Polymorphonuclear (PMN) Leukocytes
3. ) Mast Cells

Question 2

What are the 3 types of lymphocytes?

Answer 2

Lymphocytes

1. ) B Lymphocytes (B cells)
2. ) T Lymphocytes (T cells)
3. ) Natural Killer Cells

Question 3

What are the 3 main types of T cells?

Answer 3

T cells

1. ) Helper T cells (CD4+ cells)
2. ) Cytotoxic T cells (CD8+ cells)
3. ) Regulatory T cells

Question 4

What are the 2 different types of Monocytes?

Answer 4

Monocytes

1. ) Macrophages
2. ) Dendritic cells

Question 5

What are the 3 types of cells of the immune system that are phagocytic?

Answer 5

Phagocytic

1. ) Macrophages
2. ) Dendritic cells
3. ) Neutrophils

Question 6

_______ make antibodies.

A.) B Lymphocytes (B cells)

B.) T Lymphocytes (T cells)

C.) Natural Killer Cells

Answer 6

A.) B Lymphocytes (B cells)

Question 7

________ kill tumor cells and virally infected host cells.

A.) B Lymphocytes (B cells)

B.) T Lymphocytes (T cells)

C.) Natural Killer Cells

Answer 7

B.) T Lymphocytes (T cells)

C.) Natural Killer Cells

Question 8

_______ reach maturity in the bone marrow.

A.) B Lymphocytes (B cells)

B.) T Lymphocytes (T cells)

C.) Natural Killer Cells

Answer 8

B Lymphocytes (B cells)

Question 9

_______ circulate in the blood, settle in various lymphoid organs, are activated by antigen, and differentiate into cells producing antibody which are now called plasma cells.

A.) B Lymphocytes (B cells)

B.) T Lymphocytes (T cells)

C.) Natural Killer Cells

Answer 9

B Lymphocytes (B cells)

Plasma cells have memory

Question 10

_______ develop in the thymus.

A.) B Lymphocytes (B cells)

B.) T Lymphocytes (T cells)

C.) Natural Killer Cells

Answer 10

T Lymphocytes (T cells)

Question 11

_______ can remain in the thymus, circulate in the blood, or reside in lymphoid organs.

A.) B Lymphocytes (B cells)

B.) T Lymphocytes (T cells)

C.) Natural Killer Cells

Answer 11

B.) T Lymphocytes (T cells)

Question 12

_______ work against intracellular pathogens. For example: virally infected host cells, host cells with internal bacteria (obligate intracellular parasites), and tumor cells.

A.) B Lymphocytes (B cells)

B.) T Lymphocytes (T cells)

C.) Natural Killer Cells

Answer 12

T Lymphocytes (T cells)

Question 13

_______ usually have granular morphology, and provide protection from viruses and intracellular bacteria.

A.) B Lymphocytes (B cells)

B.) T Lymphocytes (T cells)

C.) Natural Killer Cells

Answer 13

Natural Killer Cells

Question 14

_______ are non-T, non-B lymphocytes that kill certain tumor cells.

A.) B Lymphocytes (B cells)

B.) T Lymphocytes (T cells)

C.) Natural Killer Cells

Answer 14

Natural Killer Cells

Question 15

Helper T cells serve to regulate the immune response.

_______ act on large, non-phagocytosable, extracellular helminths; shifts the immune response from cell mediated to humoural immunity.

A.) TH1

B.) TH2

C.) TH3

Answer 15

TH2

CD4+

Question 16

Helper T cells serve to regulate the immune response.

_______ are important in mucosal immunity; inhibits the action of TH1 and TH2; anti-inflammatory

A.) TH1

B.) TH2

C.) TH3

Answer 16

TH3

CD4+

Question 17

Helper T cells serve to regulate the immune response.

_______ act on small, phagocytosable, intracellular pathogens; stimulates an inflammatory response.

A.) TH1

B.) TH2

C.) TH3

Answer 17

TH1

CD4+

Question 18

_______ possess the receptor called CD8 (CD8+).

A.) Helper T cells

B.) Cytotoxic T cells

C.) Regulatory T cells

D.) NK cells

Answer 18

Cytotoxic T cells

Question 19

_______ destroy host cells infected with viruses and cancer cells. Requires direct contact with infected cells, and exposes the cellular pathogen to the immune system.

A.) Helper T cells

B.) Cytotoxic T cells

C.) Regulatory T cells

D.) NK cells

Answer 19

Cytotoxic T cells

Question 20

_______ are also called CD4+ cells.

A.) Helper T cells

B.) Cytotoxic T cells

C.) Regulatory T cells

D.) NK cells

Answer 20

Helper T cells

Question 21

_______ are also known as suppressor T cells, or T-regs/Tregs.

A.) Helper T cells

B.) Cytotoxic T cells

C.) Regulatory T cells

D.) NK cells

Answer 21

Regulatory T cells

Question 22

_______ are known as CD4+/CD8+ and regulate the immune response. Maintains tolerance to self. Regulates autoimmune diseases.

A.) Helper T cells

B.) Cytotoxic T cells

C.) Regulatory T cells

D.) NK cells

Answer 22

Regulatory T cells

Question 23

_______ are migratory cells that can move to the site of infection. Found in all healthy cells.

A.) Macrophages

B.) Dendritic cells

C.) Basophils

D.) Eosinophils

E.) Neutrophils

Answer 23

Macrophages

Question 24

After stimulation, _______ migrate to the blood stream or to the lymphatic system and present antigens to T cells.

A.) Macrophages

B.) Dendritic cells

C.) Basophils

D.) Eosinophils

E.) Neutrophils

Answer 24

Dendritic cells

Question 25

\_\_\_\_\_\_\_ produce histamine. Histamine causes blood vessels to constrict, which makes it more difficult for pathogens to circulate to other tissues and organs. ## Footnote A.) Macrophages B.) Dendritic cells C.) Basophils D.) Eosinophils E.) Neutrophils

Answer 25

Basophils

Question 26

\_\_\_\_\_\_\_ release cationic proteins. ## Footnote A.) Macrophages B.) Dendritic cells C.) Basophils D.) Eosinophils E.) Neutrophils

Answer 26

Eosinophils