Bleeding facts for kids
Desanguination is a major blood loss. Exsanguination is losing enough blood to cause death. A person does not have to lose all of their blood to die. People can die from losing half to two-thirds of their blood.
Typically, a healthy person can endure a loss of 10–15% of the total blood volume without serious medical difficulties, and blood donation typically takes 8–10% of the donor's blood volume.
Bleeding Facts for Kids. Kiddle Encyclopedia.