Human Defence Against Disease R

Question 1

What are all of the non specific defences against diseas in the human body

Answer 1

Tears

Nose

Glands in stomach wall

Hair

Skin

Throat

Question 2

How do tears defend against diseases

Answer 2

Tears have enzymes in which destroy pathogens

Question 3

How does the nose protect from pathogens

Answer 3

The nose traps particles that may contain pathogens

Question 4

How does the throat protect from pathogens

Answer 4

The cicilia creates a wave motion which sweeps mucus along the sheets of mucus then trap particles and bacteria

Question 5

How does the glands in the stomach wall protect from pathogens

Answer 5

Glands produce hydrochloric acid,which kills bacteria in food

Question 6

How does skin and hair protect from pathogens

Answer 6

They both secret the sebaceous gland which kills bacteria and fungi

Question 7

What do white blood cells perform to protect f on pathogens

Answer 7

Phagocytosis

Question 8

What is phagocytosis

Answer 8

The process involves the pathogen being surrounded,engulfed and digested

Question 9

How do antigens and antibodies work

Answer 9

Antigens are markers on the surface of the microorganism l.white blood cells then become sensitised to the antigens and produce antibodies

The antibodies lock onto the antigens.this causes the microorganisms to clump together,so that other white blood cells can digest them

Question 10

What are anti toxins

Answer 10

Chemicals that neutralise the poisonous effects of toxins