BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
LYMPH NODES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Capillary walls must contain large holes
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Capillaries are defective vessels
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Capillary walls must be very thin
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Capillaries will eventually disappear as humans evolve
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Detailed explanation-1: -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. As new interstitial fluid is made, it replaces older fluid, which drains towards lymph vessels.
Detailed explanation-2: -Throughout your body, interstitial fluid (fluid found in the spaces around cells) leaks from blood capillaries into your tissues. Lymph capillaries pick up this fluid and help return it to your circulatory system.
Detailed explanation-3: -Extracellular fluid leaks out of the blood capillary walls because of pressure exerted by the heart or osmotic pressure at the cellular level. As the interstitial fluid accumulates, it is picked up by the tiny lymphatic capillaries along with other substances to form lymph.
Detailed explanation-4: -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.