immune system

Question 1

components

Answer 1

organs - thymus, spleen, tonsils, lymph nodes

Question 2

non-specific (innate) immunity

Answer 2

acts rapidly no memory. 1)first line of defence - structures= skin, nasal hair. 2)chemicals - sweat tears 3)commensal flora

Question 3

specific defence - adaptive immunity

Answer 3

generate appropriate response , has memory

Question 4

complement (innate)

Answer 4

group of blood serum proteins that help defend the body as they enhance ability of antibodies

Question 5

phagocytosis

Answer 5

process of ingesting particles by a cell to form a phagosome which fuses with lysosome to become a phagolysosome

Question 6

interferons

Answer 6

group of signalling proteins produced by virus infected cells

Question 7

defensins

Answer 7

natural antimicrobial agents

Question 8

dendritic cells

Answer 8

process antigen material and present it on the cell surface to the T cells. acts as mesenger between innate and adaptive

Question 9

natural killer cell

Answer 9

a type of lymphocyte with no immunological memory. activity against cancer cells

Question 10

antibody

Answer 10

proteins produced by B-lymphocytes form antigen/antibody that triggers long term immunity. 5 types = IgA, IgE, IgD, IgE, IgM

Question 11

B cell lymphocytes

Answer 11

produce antibody

Question 12

T cells

Answer 12

T helper, T suppressor also respond to antigen but not produce antibody