This video lecture delves into the intricate processes of protein digestion and absorption in the human body. Starting from the ingestion of proteins, we follow the journey of protein breakdown into smaller peptides and amino acids, facilitated by enzymes such as pepsin, trypsin, and chymotrypsin. The lecture then explores the absorption of these nutrients into the bloodstream through the intestinal walls, highlighting the role of transport mechanisms and the fate of absorbed amino acids in the body. By the end of this lecture, viewers will gain a comprehensive understanding of the complex processes involved in protein digestion and absorption, essential for maintaining optimal health and nutrition.