chapter 22- lymphatic system and immunity

Question 1

when a hemocytoblast produces what stems cells, T cells, B cells & NK cells will be created

Answer 1

lymphoid

Question 2

T cells get their name for the fact that they mature in what organ?

Answer 2

thymus

Question 3

what makes a lymphoid organ unique from a lymphoid follicle/nodule?

Answer 3

organ has a capsule

Question 4

the middle of a lymphoid follicle is the what & is where B cells are dividing

Answer 4

geminal center

Question 5

the collective term for all the lymphoid nodules along the intestine is the MALT
which stands for what?

Answer 5

mucosa-associated lymphoid tissue

Question 6

There are 2 what tonsils visible at the back of the mouth?

Answer 6

palatine

Question 7

lymph enters a lymph node through many what vessels and then slowly filters through the sinuses?

Answer 7

afferent

Question 8

the red pulp of the spleen is made up of what filled with blood?

Answer 8

sinusoids

Question 9

the cutaneous membrane is protective against microbes due to the thick keratin,
acid & what else?

Answer 9

salt

Question 10

what is the enzyme produced in mucus secretions specifically
disrupt the walls of bacterial cells?

Answer 10

lysozyme

Question 11

neutrophils secrete what which create membrane pores to disrupt or lyse target cells?

Answer 11

defensins

Question 12

when pseudopods completely wrap around a target cell, the vesicle that is
formed is called a what?

Answer 12

phagosome

Question 13

when NK cells encounter a virus-infected or cancerous cell, they will respond by
releasing what?

Answer 13

perforins

Question 14

what is produced by virus-infected cells to trigger
neighboring cells to produce antiviral proteins?

Answer 14

beta interferon

Question 15

the classical pathway of complement activation requires what bound
to the target cell to bind C1 & start the cascade?

Answer 15

antibodies

Question 16

complement fixation will trigger three protective effects: phagocytosis,
inflammation & the formation of the what?

Answer 16

membrane attack complex (C5-C9)

Question 17

inflammation is commonly triggered by the release of what from Mast
cells or Basophils?

Answer 17

histamine

Question 18

pyrogens are released by leukocytes, but mostly by what, to trigger fever?

Answer 18

macrophages

Question 19

the automatic production of antibodies against A or B antigens of RBCs without
exposure to those antigens is called what?

Answer 19

innate immunity

Question 20

vaccinations are administered to achieve what immunity?

Answer 20

induced acquired active

Question 21

an antigen presented in a class I MHC will be recognized by a what cell?

Answer 21

cytotoxic T

Question 22

antigen-presenting cells activate Helper T cells by displaying antigens in
glycoprotein receptors are called what?

Answer 22

class 11 major histocompatibility complex

Question 23

what is the purpose of memory cells?

Answer 23

wait until next exposure & activate more quickly

Question 24

activated Helper T cells function to secrete what?

Answer 24

cytokines

Question 25

an activated B cell is called a what cell, and it functions to produce what?

Answer 25

plasma & antibodies

Question 26

name the class of antibodies that are a monomer and are the most common in
your blood.

Answer 26

IgG

Question 27

IgE antibodies function as a receptor on the surface of what cells &
basophils?

Answer 27

mast

Question 28

the antigen-biding sites of an antibody adhere to the antigenic determinant site
or what of an antigen?

Answer 28

epitope

Question 29

coating something with proteins like antibodies or C3b to enhance phagocytosis is called what?

Answer 29

opsonization

Question 30

which lymphoid organ is expected to shrink with age?

Answer 30

thymus