The role of the Lymphatic System is:

• The fight against infection.This is achieved by:

Production and storage of leukocytes
Filtering of antigens (foreign bodies) and starting the process of their destruction and removal ,
The The primary function of the lymphatic system and the network of lymphatic vessels and lymph nodes is to protect the body against the entry of foreign microorganisms such as bacteria, fungi and viruses. When these microorganisms invade the body, they enter the lymphatic system which acts as a shield, capturing, destroying and removing them. Specialized white cells called lymphocytes are found in the chain of lymph nodes throughout the body and are responsible for mobilizing the immune system to fight foreign microorganisms.

• Homeostasis. This is achieved by:

                               It maintains the fluid level in a stable state in the tissues by removing the excess fluid.
It draws fat, proteins and other products of cellular metabolism from the tissues back into the circulatory system.

The lymphatic system is also important in maintaining the body's fluid balance by filtering, collecting and returning excess lymph fluid, which is rich in proteins, lymphocytes and salts, back into the bloodstream .