5.1 Defence Mecnahisms

Question 1

immune system definitions

Answer 1

system of biological structures and processes within an organism which protects the body against disease by idetifying and killing pathogens

Question 2

functions of cytotoxic T cells

Answer 2

kill virus-infected and damaged cells

Question 3

functions of helper T cells

Answer 3

help cytotoxic T cells and b cells in immune functions

Question 4

functions of b lymphocytes

Answer 4

produce antibodies

Question 5

non-specific defence mechanism examples

Answer 5

physical barriers (skin, mucus, stomach acid, tears)
phagocytosis

Question 6

specific defence mechanisms

Answer 6

cell medicate response (T-lymphocytes)
hormonal response to b lymphocytes