Question at position 4 Lymph is considered aInterstitial fluidExtracellular fluidIntracellular fluid

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Question at position 4 Lymph is considered aInterstitial fluidExtracellular fluidIntracellular fluid

BlackTom AI · Accepted Answer

When approaching the question about the nature of lymph, it helps to distinguish between fluid compartments in the body.
Option 1: Interstitial fluid. This is the fluid bathing cells in tissues, located in the extracellular space between cells. Lymph originates from this fluid after it enters lymphatic capillaries, so while lymph is derived from interstitial fluid, saying it remains simply interstitial fluid isn’t fully accurate because it has entered the lymphatic vessels and becomes lymph.
Option 2: Extracellular fluid. This term encompasses all fluids outside cells, including both interstitial fluid and lymph. Since lymph is derived from interstitial fluid and remains outside cells as it travels in the lymphatic system, it is categorized as extracellular fluid. This option captures the broader compartmentalization that includes lymph as part of the extracellular milieu.
Option 3: Intracellular fluid. This is the fluid contained within cells, separated from the external environment by the cell membrane. Clearly, lymph is not inside cells, so this option is incorrect.

To recap the common hierarchy: intracellular fluid = inside cells; extracellular fluid = outside cells, including interstitial fluid and lymph; interstitial fluid is a subset of extracellular fluid that directly bathes tissues. Since lymph is extracellular and extends from interstitial fluid into lymphatics, it is rightly considered extracellular fluid rather than intracellular or strictly interstitial fluid in the context of the broader compartment label.

Question at position 4 Lymph is considered aInterstitial fluidExtracellular fluidIntracellular fluid

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