How many blood cells are there in a human body?

150,000 to 400,000 per cubic mm of blood. Therefore, on an average there are about 5307500 blood cells per cubic mm of blood. Assuming a normal human body has about 5 litres or 5000000 cubic mm of blood. The number of blood cells equals. 5000000 x 5307500. read more

Blood comprises water, some substances and cells.There are 8 types of blood cells in human body like 1. RBCs, 2 WBCs (6 types) and 3. Platelets. These 3 types have a specific function and structure contributing to normal health of the body. read more

Your body is a microbial melting pot, home to trillions of bacteria that help keep you healthy and regular. And for decades, scientists have shown their importance with this alluring factoid: The microbes in your body outnumber your own cells ten to one. read more

Look at a beaker of blood, for example, and you’ll find that the red blood cells are packed tight. If you used their density to estimate the cells in a human body, you’d come to a staggering 724 trillion cells. Skin cells, on the other hand, are so sparse that they’d give you a paltry estimate of 35 billion cells. read more