Question

When do people need a repeated blood transfusion?

Answer 1

Hint: Blood is a major component of the body that travels in the internal veins present all across the body. Transfusion generally nowadays refers to the transfusion of major components such as platelets, clotting factors etc. It takes place in people repeatedly who are suffering from some severe health issues.

Complete answer:
Blood is opaque, somewhat sticky, and slightly- heavier than water bulk. It is regarded as connective tissue because it has intercellular material or matrix between its cells. Moreover, certain cells, the leukocytes, of the blood keep passing back and forth between the connective tissue proper and the blood through the walls of the capillaries. However, the blood diffuses from the connective tissues in that its matrix is fluid, does not contains fibres, and is not secreted by the cells it contains and the cells are free.

Blood transfusion is a common procedure in which donated blood or blood components are given to the person through an intravenous line. It is used for various medical conditions to replace lost components of the blood. Earlier whole blood was transfused but now in modern medical practices, the components of the blood like red blood cells, white blood cells, plasma, clotting factor and platelets are generally transfused.

People are given repeated blood transfusions when the person undergoes major surgeries due to an accident or to one who is suffering from severe diseases like Haemophilia, anaemia or cancer, Leukemia etc.

Note: William Harvey's experiments on the circulation of blood was used as recorded research into blood transfusion in between the animals. Pope Innocent VIII was said to give "the world's first blood transfusion" by his physicians Giacomo di San Genesio, who made him drink 10-year-old child blood. But the boy subsequently died.