Question

smallest cell in human body​

Answer 1

According to some scientists, granule cell of cerebellum is the smallest cell, which ,measure about 4.0 to 4.5 micrometer and it looks like above u can see

Answer 2

$\mathfrak{Answer:}$

Sperm cell  :

The smallest cell is the sperm cell and the largest cell is ovum in the human body. The sperm is a male reproductive cell and they are small in size. The sperm cell head measures about 4 mm in length, just slightly smaller than a red blood cell. The ovum also called egg cell is the reproductive cell in the female body.