OVERVIEW OF THE IMMUNE SYSTEM
IMMUNITY INNATE AND ADAPTIVE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Tissue fluid leaks out of blood vessels and is called lymph when it enters the lymphatic vessels.
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Tissue fluid surrounds the body cells, and lymph circulates throughout the lymphatic system.
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Lymph leaks out of the blood. It is then called tissue fluid.
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Tissue fluid is the liquid portion of the blood. When it leaks out of the capillaries, it is called lymph.
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Detailed explanation-1: -The lymphatic system is a network of delicate tubes throughout the body. It drains fluid (called lymph) that has leaked from the blood vessels into the tissues and empties it back into the bloodstream via the lymph nodes. The main roles of the lymphatic system include: managing the fluid levels in the body.
Detailed explanation-2: -Lymphatic vessels collect and filter lymph (at the nodes) as it continues to move toward larger vessels called collecting ducts. These vessels operate very much like your veins do: They work under very low pressure, have a series of valves in them to keep the fluid moving in one direction.
Detailed explanation-3: -Fluid found in the spaces around cells. It comes from substances that leak out of blood capillaries (the smallest type of blood vessel). It helps bring oxygen and nutrients to cells and to remove waste products from them.
Detailed explanation-4: -Simply speaking, the difference between blood and lymph is that lymph, unlike blood, is colourless and it is a return fluid from tissues to the central circulation. Furthermore, interstitial fluid is present between the cells in the various tissues and it enters the lymph capillaries.
Detailed explanation-5: -Lymph capillaries pick up the excess interstitial fluid and proteins and return them to the venous blood. After the fluid enters the lymph capillaries, it is called lymph.