What is lymphatic system and what is its importance?

 

Lymphatic system  is part of the circulatory system and a vital part of the immune system, comprising a network of lymphatic vessels that carry a clear fluid called lymph, directionally towards the heart.
Location :

Lymph nodes are abundant in neck, arm-pit and groin. Tonsils and adenoids are important lymphatic organs of the body.

Functions :

(i) Produce lymphocytes and monocytes.

(ii) Synthesize certain antibodies.

(iii) Phagocytose and destory bacteria and other pathogens.
(iv) Absorbs fats. 
(v) Carry nutrients and hormones.