Final answer:
The major amount of blood loss can occur due to various factors, such as increased demand during rapid growth or pregnancy, poor stores at birth in premature babies, pathological blood loss, and infestations like hookworm.
Step-by-step explanation:
The major amount of blood loss can occur due to various factors, such as increased demand during rapid growth or pregnancy, poor stores at birth in premature babies, pathological blood loss from conditions like bleeding piles or gastrointestinal cancer, and infestations like hookworm.
Hemorrhage refers to a loss of blood that cannot be controlled by the body's hemostatic mechanisms. Minor blood loss is managed by hemostasis and repair, but hemorrhage requires medical intervention to restore blood volume.
Overall, blood constitutes approximately 8 percent of adult body weight, with adult males averaging about 5 to 6 liters of blood and females averaging 4-5 liters.