Why do you suppose red blood cell call for to be so small?
Answers:
They may be small, but have a high surface area for their size. This is to aid oxygen exchange inside the capillaries.
The capillaries are very small and come to a point blood vessels, slowing the red blood cells down, again to maximise gaseous exchange.
We need them so small i suppose, to fetch oxygen around the body efficently.
Red blood cells with their normal average size of 6-8 um are essentially small because of their prime rush in the transport of oxygen all over the human body. They are transported with oxygen bound to their hemoglobin pigments ratification through very small capillaries. In order to manage these parts, the RBCs should be small enough. Aside from the very small size, RBCs have added all your own of being flexible brought by the absence of nucleus and the presence of a flexible membrane itself. Source(s): http://www.pinoymug.com/category/Science
Red blood cells are flexible. In certainty they must bend to get through tiny capillaries in lay down to exchange gases (carbon dioxide and oxygen) going from more concentrated to less concentrated within tissue and in the lungs. Blood cells in the middle of a larger vessel are not in intimate contact next to the gases. A red blood cell lives only about 120 days and is removed from circulation when it is no longer flexible satisfactory. Donating a pint of blood reduces the average age of the remaining blood (probably a good thing for carrying extra oxygen). Each fresh red blood cell is packed out full of hemoglobin. Source(s): http://en.wikipedia.org/wiki/Red_blood_c…
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