What is lymph ? How is composition of lymph different from blood plasma? What is its direction of flow? list any 2 function of lymph?
Answers
✴️ As blood is flowing with pressure in the arteries, some water and dissolved materials seep out into the tissue spaces ; this fluid is called interstitial fluid.
✴️ The part of the interstitial fluid enters the lymph channels, is called lymph.
✴️ lymph has a composition similar to that of plasma, except that it has less proteins, as the capillary wall is not permeable to the large plasma protines. lymph also has lymphocytes, a type of agranulocytes.
✴️ fine channel arising from the tissue spaces, into which portion of the interstitial fluid flows, are the lymph vessels.
✴️ The lymph vessels join and ultimately open into the venous blood system and reach the heart.
✴️ It acts as the medium for exchange of gases, nutrients, etc,. between the blood and the cells.
✴️ It acts as an accessory route for the flow of interstitial fluid into the blood.
✴️ It takes the larger biomolecules into blood for circulation.
Answer:
Lymph is a colourless fluid containing white blood cells, which bathes the tissues and drains through the lymphatic system into the bloodstream.
The composition of tissue fluid and lymph is the same as that of blood plasma but the tissue fluid and lymph have lower proteins content. As compared to the tissue fluid, the lymph contains a very small amount of nutrients and oxygen but contains abundant carbon dioxide and other metabolic wastes.
Most of this fluid returns to the venous circulation through tiny blood vessels called venules and continues as venous blood.
It keeps the body cells moist. It transports oxygen, hormones and nutrients to different parts of the body and removes metabolic waste from the cells. It transports antibodies and lymphocytes to the blood.