Pepsin

Pepsin Definition

Imagine trying to untangle a pair of earphones that have been jumbled up in your pocket. Pepsin works in your stomach like your fingers do when they patiently separate and unravel the knotted cords of your earphones. Just as your fingers break down the tangled mess into individual, usable lines, pepsin breaks down complex proteins in your food into smaller, manageable amino acids, making them easier for your body to absorb and use.

Practice Version

Pepsin Definition

Pepsin: An enzyme in gastric juices that breaks down proteins. Pepsin. Pepsin is a protein-digesting enzyme in the stomach that helps break down food into smaller molecules.