Trypsin is an enzyme produced in the pancreas that plays a crucial role in digestion. It helps break down proteins into smaller peptides, making them easier for the body to absorb. Trypsin is activated in the small intestine from its inactive form, trypsinogen, which is secreted by the pancreas. This enzyme works best in an alkaline environment, which is provided by bile and pancreatic juices. Trypsin is essential for proper nutrient absorption and is involved in various physiological processes, including cell signaling and immune response. Its activity is regulated to prevent damage to the pancreas and surrounding tissues.