unit 2

Question 1

innate immunity

Answer 1

responds nonspecifically to their target
broad
we are born with innate immunity

Question 2

adaptive immunity

Answer 2

highly specific recognition of pathogen
takes time to develop
generates memory

Question 3

inflammation moves which cells form the blood to the site of infection

Answer 3

WBCs

Question 4

Th1 cells activate

Answer 4

macrophages and CD8+ T cells

Question 5

Th2 cells activate

Answer 5

B cells

Question 6

cytotoxic T cells

Answer 6

bind cells, make holes (perforin) and kill (granzymes)

Question 7

plasma cells

Answer 7

B cells differentiate into plasma cells
make and secrete Abs

Question 8

humoral immunity

Answer 8

extracellular
* B cells (plasma cells)

Question 9

cell-mediated immunity

Answer 9

intracellular
* CD4+ and CD8+ cells

Question 10

what types of antigens activates B cells independently of T cells

Answer 10

polysaccharides, typically from capsules

Question 11

IgM

Answer 11

activates complement

Question 12

IgG

Answer 12

most abundant Ab in serum
crosses placenta
opsonization

Question 13

which Ab is generated first and which antibody is produced after B cells class switch?

Answer 13

IgM then IgG

Question 14

toxoid vaccine

Answer 14

contain inactivated exotoxin

Question 15

conjugate vaccine

Answer 15

polysaccharides linked to proteins, enhance antigenicity in young children

Question 16

whole killed vaccine (attenuated)

Answer 16

used killed whole clels or inactivated whole viruses

Question 17

passive immunity

Answer 17

passed onto a person in some way

Question 18

passive immunity

Answer 18

passed onto a person in some way

Question 19

active immunity

Answer 19

the person gets the illness and builds immunity to it