What effect does insulin have on the blood's glucose concentration?no

Insulin is a hormone produced in the body by pancreas. This hormone regulates the body's use of sugar and other foods. Insulin speeds up the movement of nutrients from the blood stream into cells located mainly in lever, muscles and fat tissues.

When food is absorbed into the bloodstream, the pancreas increases the secretion of insulin into the blood.  Insulin speeds the movement of nutrients from the bloodstream into target cells located mainly in liver, muscle, and fat tissues.  Specialized protein molecules called insulin receptors lie on the surface of the target cells.  Glucose and other simple sugars, produced by the digestion of more complex carbohydrates, are used by these cells for immediate energy or converted to glycogen for storage.  Amino acids, produced by the digestion of proteins, move into cells and there form the building blocks for proteins.  Fatty acids, produced by the digestion of fats, are converted to tryglycerides for storage and later used for energy.

Insufficient production of insulin in the body causes a form of diabetes called Type I diabetes in which levels of glucose increases in the blood.  In a milder form of diabetes known as Type II diabetes, normal amounts of insulin is produced, but the body is unable to utilize the insulin properly.