What role does trypsin play in the digestive system?

Trypsin plays a crucial role in the digestive system by participating in the digestion of food proteins. It is an enzyme produced in the pancreas and released into the small intestine, where it acts on proteins by breaking them down into smaller peptides and amino acids, which can then be easily absorbed by the body. This process is essential for protein digestion, as it allows the body to utilize the amino acids for various functions, including tissue repair and growth, hormone production, and enzyme synthesis.

The other choices do not accurately describe the function of trypsin: nutrient absorption is performed by the cells lining the intestines rather than an enzyme like trypsin; the digestion of fats is primarily managed by other enzymes, such as lipase; and blood sugar regulation is controlled by hormones like insulin and glucagon, not by digestive enzymes like trypsin.