Name the smallest and largest cell in the human body.

The smallest cell in the human body is the male gamete – the sperm cell.

• The sperm cells are small in volume.
• The size of the head of the sperm cell is 4 micrometres in length.
• It is a little bit smaller than an RBC (Red Blood Cell). 
• A sperm, which is the smallest human body cell is about 20 times smaller than the ovum.

Read More: Difference between Sperm and Ovum

The largest cell in the human body is Ovum (female gamete).

• Ovum is the single cell that is released each month by the ovaries.
• Their size is about 0.1 mm in diameter.

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