What is lymph class 10 NCERT?

In Class 10 NCERT Biology, lymph is a clear, colorless fluid that circulates through the lymphatic system. It is a modified form of blood plasma, with fewer proteins and no red blood cells. Lymph plays a crucial role in defending the body against infections, absorbing fats, and returning excess tissue fluid to the bloodstream.

Key Points about Lymph:

Composition:

Lymph contains white blood cells, especially lymphocytes, which are essential for immune responses. It also includes proteins, fats, and other substances that have been filtered from blood and tissues.

Circulation:

Lymph flows through a network of lymphatic vessels, collecting excess fluid and waste from tissues. It then returns this fluid to the bloodstream.

Functions:

1. Immunity:- Lymphocytes in the lymph help identify and destroy harmful pathogens, protecting the body from infections.
2. Nutrient and Waste Transport:- Lymph transports nutrients and oxygen to areas where blood capillaries cannot reach, and it also helps remove metabolic waste products from tissues.
3. Fat Absorption:- Lacteals in the small intestine absorb digested fats, which are then transported into the bloodstream.
4. Fluid Balance:- Lymph maintains the body’s fluid balance by returning excess tissue fluid to the bloodstream.