In this video, You will learn about Insulin. Insulin is a peptide hormone produced by beta cells of the pancreatic islets; it is considered to be the main anabolic hormoone of the body. Types of insulin as rapid, short, intermediate and long acting insulins are also described well. TIMELINE: 0:00 Introduction 0:34 Onset, peak, and duration 1:04 Rapid-acting insulin 3:58 Short-acting insulin 4:54 Intermediate-acting insulin 6:06 Long-acting insulin