Question
What is a hormone? From where insulin is secreted? Describe briefly the functions of insulin.
Answer
(a) Hormones are chemical messengers secreted by the endocrine glands into the bloodstream, which travel to different parts of the body and regulate various physiological processes.
(b) Insulin is secreted by the beta cells of the Islets of Langerhans in the pancreas.
(c) The primary function of insulin is to regulate glucose metabolism in the body. It helps in the uptake of glucose by the cells and tissues and promotes the storage of excess glucose as glycogen in the liver and muscles. Insulin also inhibits the breakdown of glycogen to glucose and promotes the synthesis of protein and fat. Overall, insulin plays a crucial role in maintaining normal blood sugar levels and preventing hyperglycemia.
