Name the smallest cell and the largest cell in the human.
The smallest cell in the human body is the sperm cell.
These cells are small in volume. Head of the sperm cell measures about 4 micrometres in length, just a little bit smaller than a red blood cell (RBCs).
The largest cell in the human body is Egg cells (ovum). They are 20 times larger than the sperm cells and measure about 0.1 millimetres in diameter.