Human Cell


A human body consists of around 10 trillion cells. Whether it is reproduction or infections or the repairing of a broken bone, it happens at the cellular level only. Cells differ in size, the smallest one being a type of bacterium called mycoplasma that measures 0.0001 mm in diameter. Human cells also vary in sizes, whether they are small red blood cells measuring 0.00076 mm or liver cells that could be ten times larger in size than red blood cells. Around 10,000 human cells of average sizes can fit onto the head of a pin. The human body has the outermost layer of skin cells as flat, whereas the muscle cells are thin and long.

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