What is the function of the lymph nodes?

filter and purify interstitial liquid returning to the blood

filter fluids entering each cell

absorb excess fluid from blood

regulate the consistency of fluid in plasma

Lymph nodes absorb excess fluid from blood

Explanation:

Lymph nodes are part of lymphatic system. Lymph nodes perform two main function; one is to enhance the immunity by producing immune cells, and other is to absorb excess fluid that is continuously leaking from blood vessels. this fluid includes water, protein and other substances too. Lymph nodes are rich source of immune cells too.

filter and purify interstitial fluids returning to the blood