Platelets (thrombocytes): These mobile components are shaped from pieces of cells found in the bone marrow known as megakaryocytes. Ticks, leeches, female mosquitoes, vampire bats, and an assortment of other pure creatures do take in the blood of other animals, but only bats are associated with vampires. This has https://www.youtube.com/watch?v=buIHtQY7fCU