Hemopoeisis is the
process of making blood cells from
stem cells in our
bone marrow. Basically, two types of blood cells are
manufactured through the process of hemopoeisis:
erythrocytes (red blood cells) and
leukocytes (white blood cells). Each cell is made from a
stem cell as stated earlier, which is kind of like an
embryo for a cell: it can go either way. So, in a sense, instead of being reproduced
asexually, our blood cells are actually
grown.
**
Interesting fact: we produce ten million red blood cells every
second!