Immune System: Chapter 43

Question 1

Innate immunity

Answer 1

The antigens in your body that youare already born with jour first line of defense

Skin and mucus are usually the first line of defense

Question 2

Recognition proteins

Answer 2

Apart of innate immunity; recognizes what a pathogen is in order to determine what line of defense

Question 3

Cellular defense in innate immunity

Answer 3

Macrophages, dendritic cells, interferons and natural killer cells

Question 4

What do macrophages and dendritic cells do

Answer 4

Ingest pathogen through phagocytes

Question 5

Function of natural killer alls

Answer 5

Induce death of virus cells

Question 6

Inflammatory response of innate immunity

Answer 6

Histamine are released@ injury site

Question 7

Physical barriers ot innate immune system

Answer 7

Skin/hair/cillia, mucus membranes, enzymes in mouth, stomach acid

Question 8

Internal defenses of innate immune system

Answer 8

Inflammatory response, complement protons, phagocytes cells, nk cells

Question 9

Adaptive immunity

Answer 9

Immunity gained throughout life not born with it, pathogen specific receptors

Question 10

What due adaptive immunity rely on

Answer 10

2 types of lymphocytes; B cells and t cells

Question 11

What are lymphocytes

Answer 11

Has Cell-surface antigen receptors for foreignmolecules

Question 12

T-cell job in antigen invasion

Answer 12

Helps Other lymphocytes and kill infected host cells

Question 13

B-cells function

Answer 13

Aka plasma cells; produce antibodies

Question 14

B and t memory cells

Answer 14

Help prevent/stop future infections by the same pathogen

Question 15

B and T cells must bind to the

Answer 15

Epitope= a small region of an antigen

Question 16

MHC

Answer 16

Binds peptide fragments from antigens and places them on the surface of the cell

Question 17

4 major characteristics of B and t cell development

Answer 17

Generation of cell diversity,

self tolerance,

proliferation and

immunological memory

Question 18

Helper t-cells function

Answer 18

1) triggered by MHC class II cells indicating that there is an infection or foreign substance

2) helper T cells are triggered and release cytokines

3) cytokines notify other immune cells to start an immune response

Question 19

Humoral immune response

Answer 19

Antibodies kill antigenthrough phagocytes

Question 20

Cell mediated immune response

Answer 20

Cytotoxic T cells are triggered to kill infected cells

Question 21

Active immunity

Answer 21

Antibodies are produced after exposure to antigen; Response usually to immunizations

Question 22

Passive immunity

Answer 22

Given antibodies instead of creating them your self and gives you Short term immunity

Question 23

Autoimmune disease vs immunodeficiency

Answer 23

Immunodeficiency: impairment of the immune system ex=AIDS

Autoimmune disease: immune system attacks healthy cells, tissues, organs, etc.