Lactase

Definition

Lactase is an enzyme produced by the small intestine that breaks down lactose, the sugar found in milk, into glucose and galactose, which can then be absorbed into the bloodstream. This enzyme plays a critical role in the digestion of dairy products for individuals who produce it adequately.

Related terms

Enzyme: Proteins that speed up chemical reactions in cells without being consumed in the process.

Lactose:

A disaccharide sugar composed of glucose and galactose, commonly found in milk and dairy products.

Small Intestine:

The part of the digestive system where most chemical digestion and nutrient absorption takes place, including the activity of enzymes like lactase.