Lymph is formed when interstitial fluid enters lymphatic vessels. According to the provided reference, lymph is derived from the interstitial (tissue or cells) fluid through fine, irregular lymph capillaries when the interstitial fluid comes in contact with blood vessels.
Essentially, here's a breakdown:
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Interstitial Fluid: This is the fluid that surrounds cells in tissues. It's derived from blood plasma.
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Lymph Capillaries: These are tiny, thin-walled vessels that collect the interstitial fluid.
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Formation Process: When interstitial fluid enters the lymph capillaries, it's then considered lymph. This process occurs because the interstitial fluid comes in contact with blood vessels.
Therefore, the formation of lymph is intricately linked to the interaction between interstitial fluid and lymph capillaries in the body's tissues.
