How the Body Resists Infection (P3)
![]() Body defence - Skin
How infection is resisted Skin is a physical barrier that help to stop the pathogens going inside the body. So the infections and other microbes cannot penetrate the skin. ![]() Body defence - Ear wax
How infection is resisted There are glands that produce ear wax known as cerumen which protect the ear from damage and infections. The wax accumulated dries and falls out of the ear canal carrying dust or sand particles with it. ![]() Body defence - Cilia and mucus
How infection is resisted There are mucous membranes that secrete mucus in many parts of the body. The mucus have traps to prevent pathogens to entering in the body. Cilia are small hairs that push the mucus to the pharynx for accepting to the stomach. For this process also contribute the cough by helping it. |
![]() Body defence - Tears
How infection is resisted Tear glands contains lysozyme which can kill bacteria and stop to get infections. ![]() Body defence - Stomach acid
How infection is resisted The acid which is found in stomach is called hydrochloric acid and help the organism by killing the micro-organisms. ![]() Body defence - Blood clotting and scab
How infection is resisted When the skin is cracked, the blood starts clotting. Then the clot hardens and it is formed the scab. This protects the wound and stops the pathogens to entry in the body. |
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Body defence - White cells
How infection is resisted
The white blood cells take a big attention when the germs or infections enter in the body. They are continually lookout for signs of disease. When a germ does appear, the white cells attack them by producing antibodies or surrounding and devour the bacteria by killing it.
How infection is resisted
The white blood cells take a big attention when the germs or infections enter in the body. They are continually lookout for signs of disease. When a germ does appear, the white cells attack them by producing antibodies or surrounding and devour the bacteria by killing it.