THE IMMUNE SYSTEM

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New words: Network – сеть Tube – сосуд, трубка Liquid – жидкость Tissue – ткань Vessel – сосуд Node – узел Nutrients – питательные вещества

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The main defences against invaders such as bacteria and viruses are white blood cells called lymphocytes which are stored in the body’s lymphatic system. This is network of thin tubes running throughout the body. It contains a watery liquid called lymph, which it drains from the tissue and returns to the blood. How does it work?

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At intervals along the length of the lymph vessels are small lumps called lymph nodes. Lymphocytes are stored in these lymph nodes.

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Antibiotics and how do they work? What antibiotics are ? Antibiotics are chemicals that help your body to fight diseases caused by bacteria and fungi. They are manufactured naturally by some microbes in order to protect themselves, but are now made synthetically. More over, antibiotics have no effect on viruses.

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According to all this we can say: How does the immune system arrange; What lymph nodes are ; What antibiotics are; Two different ways of antibiotics’ work; What broad-spectrum antibiotics are; How do antibiotics work; What can happen if we overuse of antibiotics.

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Thank you for your attention! By Vera Ivanova 10 A