why R.B.C. has disc shape
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Features of red blood cells that make them suited to their function are: Their shape - their biconcave shape gives blood cell a larger surface area – which increases the ability to absorb oxygen.
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Red blood cells or Erythrocytes are biconcavebecause they do not contain NUCLEUS. They are a-nucleated. This provides the cell to attain large surface area to accomodate maximumspace for haemoglobin. ... Efficient gas transport requires erythrocytes to pass through very narrow capillaries, and this constrains their size.
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