RBCs are ___________ in shape so that they could easily flow through the all types of blood vessels.

long

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irregular

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spherical

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biconcave

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Solution

The correct option is D biconcave
Red blood cells or RBCs are components of blood and flow through all the blood vessels in our body. The biconcave disk-like shape of red blood cells allows the cells to flow through all blood vessels like arteries, veins and capillaries.

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