Yes , cells don't have any particular shape they perform such tasks they mixed with other cells .mostly cells are in round shape

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The shape and structure of a cell reflects whatever function it needs to accomplish. For example: brain cells have many connecting branches to send signals to each other. Cells that protect the body surfaces and cavities (epithelial cells) are often flatted or square-like in shape so they can fit together and cover surfaces. Red blood cells are shaped like biconcave discs (a little like an inner tube), this shape helps them absorb oxygen and be a little more flexible when passing through small blood vessels. that's why the shape of the cells is related to function.;)

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