BENIGN EPITHELIAL LESIONS or DISORDERS

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Lymphnode Examination

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 LYMPH  NODE  EXAMINATION

THE LYMPHATIC SYSTEM

·         Lymphatic system is a closed system of channels called lymph channels or lymph vessels. It is the one way system and the lymph flows through this from tissue system towards blood.

Lymph

·         Lymph is a transudate from blood & contains the same proteins as in plasma but in smaller amounts.

·         It mainly consists of lymphocytes.

Lymphatic vessels

·         Lymphatic vessel includes lymph capillaries & larger lymph vessels.

Lymph capillaries are similar to blood capillaries, but adapted to have much greater permeability.

they are found in most tissues of the body, except avascular tissues like cornea, hair, nails etc.

Larger lymph vessels

·         They have structure similar to that of veins.

·         Lymph capillaries join together to form large lymph vessels.

·         THORACIC DUCT is the largest lymph vessel in the body.

Lymph nodes

·         They are bean shaped organs found in clusters along the lymphatic channels of the body.

·         They are mainly composed of lymphoid tissue.

Structure of lymph node

·         Lymph node consists of a connective tissue framework, with numerous lymphocytes and other cells fill the interstices of the network.

·         Lymph node is surrounded by a capsule made of collagen fibres. Numerous septa run into the node from the capsule and divide it into lobules.