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Flashcards in Immune cells Deck (81)
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1

What are the 3 mechanisms of protection for the immune system?

Surface protection (mucus, keratin on skin, etc.)
Acute inflammation
Immune response

2

What is the difference between humoral immunity and cell mediated immunity

Humoral: usually in response to bacteria

Cell mediated: usually in response to virus, fungi, foreign cells

3

True or false; Cell mediated immunity is mediated by T cells

True

4

True or false; Cell mediated immunity depends on B cell participation

False; it does not depend on B cell participation

5

Which form of immune response involves antibody production

humoral immunity

6

True or false; humoral immunity is mediated by B cells and plasma cells

true

7

What are characteristics of diffuse lymphatics? What are a couple the lymphatic organs associated with it

no or incomplete capsule
humoral immunity
(Mucosal-associated lymphatic tissue "MALT") (Tonsils)

8

What are characteristics of lymphatic organs? What are examples lymphatic organs?

HAS a capsule
Humoral AND cell-mediated immunities
(Lymph nodes, spleen)

9

True or false; lymphatic organs are associated with both humoral and cell-mediated immunities

true

10

What are the 2 primary lymphoid organs

Thymus (T cells)
Bone marrow (B cells)

11

What kind of lymphoid organ provides an environment where lymphocytes become immunocompetent

Primary lymphoid organs

12

What are the 3 examples of secondary lymphoid organs

Spleen
Lymph node
Diffuse lymphatics (MALT, Tonsils)

13

True or false; secondary lymphoid organs provide an environment where lymphocytes can contact foreign antigens

true

14

Where would you find MALT? (mucosal-associated lymphatic tissue)

gastrointestinal, respiratory, and urogenital tracts

15

True or false; tears, saliva, gut lumen, nasal cavity, and vaginal surface are all areas you would expect to find secretory IgA

true

16

What are the 2 major functions of lymph nodes

Filtration of lymph using phagocytosis
Establish humoral and cell mediated immunities

17

What kind of connective tissue makes up the capsule (outside) of lymph nodes

dense irregular

18

What are the trabeculae in lymph nodes?

(septa) divides lymph node into compartments

19

What kind of vessels are found in the hilum of lymph nodes?

Efferent (outgoing vessels) + artery and vein

20

In a lymph node; where is the subcapsular or marginal sinus located?

under the capsule

21

In a lymph node; the cortical sinus passes through what?

cortex

22

In a lymph node; the deep cortical sinus passes through what?

paracortex

23

In a lymph node; the medullary sinus passes through what?

medulla region

24

In a lymph node; cells within all regions and sinuses are supported by a system of what?

reticular fibers

25

The reticular fibers that support all cells and sinuses in lymph nodes are produced by what?

reticular cells

26

The primary cell type found in the cortex of lymph nodes is what?

B cells

27

What activity is happening in the cortex of the lymph nodes

phagocytosis and humoral immunity

28

What kind of lymph nodule has no germinal center, and is a older lymph nodule or a group of B cells and B memory cells

Primary lymphoid nodule

29

What kind of lymph nodule has a germinal center, forms in response to a foreign antigen, and is B cells dividing

Secondary lymphoid nodule

30

True or false; primary lymphoid nodules have germinal centers

false; secondary lymphoid nodules have the germinal centers