overview of the immune system

Question 1

write a note on the comparison between innate and acquired immunity .

Answer 1

pg 2

Question 2

main cells in innate and and acquired immunity

Answer 2

granulocytes, monocytes/ macrophages , natural killer cells.

T & B lymphocytes

Question 3

neutrophils

Answer 3

phagocytic cells

Question 4

eosinophils

Answer 4

defence against helminthic parasites & termination of allergic reactions.

Question 5

basophils

Answer 5

allergic reactions

Question 6

which cells are similar to basophils but are found in tissues.

Answer 6

mast cells.

Question 7

monocytes are present in the ___ and continuously leave it to go to the ____ where they complete their maturation and become ____.

Answer 7

blood; tissues; macrophages

Question 8

an important bridge between innate and adaptive immune system is?

Answer 8

dendritic cells

Question 9

maturation of T - Lymphocytes takes place in the?

Answer 9

thymus

Question 10

maturation of B - Lymphocytes takes place in the?

Answer 10

bone marrow

Question 11

ratio of th cells to tc cells is?

Answer 11

2 : 1

Question 12

th cells secrete?

Answer 12

cytokines

Question 13

the main function of which cells is to kill abnormal body cells. ( infected cells and tumour cells)

Answer 13

cytotoxic T (Tc) cells

Question 14

T lymphocytes is divided into?

Answer 14

helper T cells

cytotoxic T cells

Question 15

when ___ cells become active they change into ___ cells and secrete ___

Answer 15

b lymphocytes; plasma cells ; antibodies.

Question 16

one antigen binding site, antigen t cells must be present & can detect antigens which re produced only inside the body cells ?

Answer 16

t cell

Question 17

two antigen binding site, can see antigens directly and can detect antigens present outside body cells ?

Answer 17

b cells

Question 18

where can b and t lymphocytes meet the antigen?

Answer 18

2ry lymphoid organs.