Name the largest and the smallest cell in the human body.

Granule Cell smallest 
But scientists suggest according to volume the sperm cell is smallest cell.
The largest cell in the human body is the female ovum or egg.
 

Largest cell- Ostrich Egg
Smallest Cell- Virus

The smallest cell in the human body is nerve cell and there is no largest cell in human body it in in animals body that's ostrich's egg

OVUM AND SPERM