Absorption (2026)

: This occurs when a person becomes so engrossed in a book, movie, or game that they lose track of time and their immediate surroundings.

In biology, absorption is a vital step in sustaining life, primarily occurring within the digestive system. After food is broken down through digestion, absorption allows small molecules—like glucose, amino acids, and fatty acids—to pass from the digestive tract into the bloodstream. absorption

: Nutrients cross the intestinal wall through various methods, including simple diffusion for lipids or active transport for other molecules. : This occurs when a person becomes so

: This is the primary site for nutrient uptake. Its lining is covered in tiny, finger-like projections called villi and microvilli , which vastly increase the surface area to maximize efficiency. absorption allows small molecules—like glucose