Explore the intricate world of insulin in this comprehensive 2-hour and 45-minute lecture. Delve into the various types of insulin, its synthesis process, secretion mechanisms, and regulatory pathways. Gain a deep understanding of insulin's crucial role in maintaining glucose homeostasis and its connection to diabetes. Learn about the complex journey from preproinsulin to proinsulin, and finally to active insulin and C-peptide. Discover how insulin synthesis is regulated at both transcriptional and translational levels. Examine insulin's primary function in balancing micronutrient levels during the fed state and its critical role in glucose transport to insulin-dependent tissues such as liver, muscle, and adipose tissue. Enhance your knowledge of this essential hormone and its implications for metabolic health and disease management.