Lymphatic System
A system of lymph vessels and lymph nodes in the human body which transports the lymph from the body tissues to the blood circulatory system is called LYMPHATIC SYSTEM.
The lymphatic system consists of the following parts:
(i) Lymph capillaries
(ii) Larger lymph vessels
(iii) Lymph nodes
(iv) Lymph
LYMPH: Lymph is a colourless liquid which somewhat similar in composition to plasma.
Important points for Lymph:
1. Lymph contains large protein molecules and digested food.
2. Lymph also contains germs from the cells and fragments of dead cells.
3. Lymph is another medium of circulation in the human body.
4. Lymph flows in only one direction from body tissues to the heart.
5. Lymph contains a special type of white blood cells called LYMPHOCYTES which help in fighting infection and disease.
The Functions of Lymph ( Lymphatic System)
1. Lymph takes part in the nutritive process of the body.
2. Lymph carries digested fat for the nutritive process.
3. Lymph protects the body by killing the germs drained out of the body tissues with the help of lymphocytes contained in the lymph nodes, and by making antibodies.
4. Lymph helps in removing the waste products like fragments of dead cells.
Functions of blood:
Blood has three main functions in the human body
1. Transport of substances. (like respiratory gases, oxygen and carbon dioxide, digested food or nutrients, waste products, hormones, enzymes and ions).
2. Blood protects the body from diseases with the help of WBCs.
3. Blood regulates the body temperature.
Ashwani Kumar
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