FUNCTIONS OF LYMPH NODE

DESCRIPTION

AFFERENT VESSELS

The cells in the tissue space are bathed in interstitial fluid (or extra-cellular fluid) that has been filtered from the blood. The tissue space is where the cell deposits all of its products. Small quantities of interstitial fluid are picked up by tiny vessels called lymph capillaries.

LYMPHOCYTE PRODUCTION

Lymphocytes are small white blood cells and are essential to immune defences. Lymphocytes identify and eradicate foreign particles and bacteria and also produce plasma cells which create antibodies.

ABSORPTION OF FAT

The lymphatic system helps in the absorption of fats and fat-soluble vitamins from the digestive system and carries these substances to the bloodstream. The small intestine is covered with fine hair-like projections called villi. There specialised lymph capillaries, called lacteals, in the centre of each villi absorb the fats and fat-soluble vitamins. The lymph present in the lacteals tends to have a milky appearance due to its high fat content.

PRODUCTION OF ANTIBODIES

Antibodies are molecules that are produced by a lymphocyte in response to an antigen (foreign material such as bacteria or viruses). The antibody attaches to an antigen and helps to destroy or inactivate it.