Cell Bio final-Immune

Question 0

Humoral immunity and Cell-Mediated immunity are types of?

Answer 0

Acquired immunity

Question 1

Innate immunity lacks the memory of an infection and these cells respond first to inflammation

Answer 1

Neutrophils

Question 2

Plasma cells display memory in this type of immunity?

Answer 2

Humoral immunity

Question 3

Macrophages, dendritic cells, and follicular dendritic cells are known as?

Answer 3

Accessory cells

Question 4

Passive Immunity is inherited

T/F?

Answer 4

true, maternal immunity

Question 5

Post disease gives rise to memory cells in case the antigen were to attack again. this describes?

Answer 5

Active Immunity

Question 6

which are Primary Lymphoid organs?

Answer 6

thymus and bone marrow

Question 7

Which are secondary lymphoid organs?

Answer 7

lymph nodes, tonsils, and spleen

Question 8

what do Primary follicles lack?

Answer 8

germinal centers

Question 9

Germinal centers and B cell Corona are characteristic of?

Answer 9

Secondary lymphoid follicles

Question 10

This antibody is found in saliva, breast milk, GI tract, and respiratory tracts

Answer 10

Ig-A

Question 11

In response to allergic reactions and in Parasitic worm infections like Paragonimus westermani (chinese lung fluke), this antibody is elevated

Answer 11

Ig-E

Question 12

Whats the major immunoglobin found circulating in the blood and responsible for antibody reactivity?

Answer 12

Ig-G

Question 13

Ig-M is the first antibody expressed on which cells?

Answer 13

B cells

Question 14

B cells also express another antibody besides Ig-M. which one and it usually is associated with what maternal-fetal condition?

Answer 14

Ig-D. Rh incompatibility

Question 15

Which part of an antibody binds to the antigen?

Answer 15

Fc region of Light chain

Question 16

Which part of the antibody recognizes the antigen?

Answer 16

Fab region of the heavy chain

Question 17

MHC class II proteins are involved in?

Answer 17

B cell maturation

Question 18

CD8+ T cells are cytolytic in nature and recognize this on the surface of Macrophages

Answer 18

MHC I proteins

Question 19

Which kind of T cells mature into helper T’s to recognize MHC II molecules?

Answer 19

CD4+

Question 20

MHC I molecules are found on the surface of all cells as a way of identifying their belonging to the body. it is NOT found on?

Answer 20

RBC’s and trophoblasts.

Question 21

What are the antigenic property antigens expressed from broken down foreign particles?

Answer 21

Epitopes

Question 22

Clonal expansion describes when T cells activate B cells to proliferate in response to antigen detection. T/F?

Answer 22

true

Question 23

according to the complement system, this pathway is activated by the antibody binding to the pathogen.

Answer 23

Classic

Question 24

What is the most important Opsonin?

Answer 24

C3b

Question 25

Opsonization is poking holes in the pathogen membrane by?

Answer 25

MAC- membrane attack complex...mac daddy!

Question 26

of the activation sequence, what initiates the complement cascade?

Answer 26

C1-s

Question 27

C1-q binds to which region of the Ig antibody?

Answer 27

Fc region

Question 28

4b2b combine to form?

Answer 28

C3 convertase

Question 29

Chemotaxis is a term to describe?

Answer 29

the release of chemokines to attract phagocytes to an area of infection/inflammation

Question 30

lymphocytes that pack a lymphoid organ refers to a?

Answer 30

Parenchyma

Question 31

Stroma consists of reticular fibers, undifferentiated cells, free and afixed macrophages? T/F?

Answer 31

hell yeah it's true!!

Question 32

Are the Cortex and Center of a lymph follicle supplied by the same vascularization or different?

Answer 32

different!

Question 33

What is the entry and exit point for efferent and afferent lymhatics?

Answer 33

Lymph hilus

Question 34

The capsule of lymph follicles are composed of these fibers?

Answer 34

dense collagen fibers, elastic fibers, smooth muscle fibers

Question 35

Outer cortex of the lymph node contains?

Answer 35

follicles

Question 36

High endothelial venules are the entry point to the outer cortex. T/F?

Answer 36

FALSE!! it is for the INNER CORTEX

Question 37

Site of reentry into lymph stream

Answer 37

Medulla cortex

Question 38

Hassall's corpuscles produce cytokines necessary for T cell maturation and are composed of single positive T cells. They are located in the?

Answer 38

Thymus Medulla

Question 39

Which cells enter the cortex from blood and proliferate in the subcapsular area?

Answer 39

Double negative T cells

Question 40

Double positive T cells move to this section of the thymus

Answer 40

outer cortex

Question 41

TCR receptors and either CD4 or CD8 receptors are expressed on these cells that eventually move to the inner cortex

Answer 41

Single positive T cells

Question 42

Splenic B cells with germinal centers are located?

Answer 42

White pulp of spleen

Question 43

Periarteriolar lymphoid sheath (PALs) are characteristic of?

Answer 43

splenic white pulp

Question 44

The site of erythrophagocytosis

Answer 44

Cords of Billroth in splenic red pulp

Question 45

These cells serve as antigen presenting phagocytic dendritic cells in the skin

Answer 45

Langerhan cells

Question 46

Melanin is derived from this amino acid

Answer 46

tyrosine

Question 47

sweat glands include merocrine and apocrine glands. T/F?

Answer 47

true.