Which hormone should be injected to diabetes mellitus patient for controlling the increased blood sugar?
Insulin is a hormone produced by beta cells of the pancreas which plays a role in the absorption of sugar i. e glucose from the blood. When there is an insufficient insulin produced or when insulin is not produced at all, glucose levels in the blood rise and results in diabetes mellitus. As diabetes mellitus is a metabolic disorder characterized by increased glucose levels in the blood due to lack of insulin or low insulin secretion by the pancreas, the hormone insulin has to be injected in order to bring down the blood glucose to normal levels. So, the correct answer is option A.