Absorption
the process or action by which one thing absorbs or is absorbed by another.
Bile
a bitter greenish-brown alkaline fluid that aids digestion and is secreted by the liver and stored in the gallbladder.
Chyme
the pulpy acidic fluid that passes from the stomach to the small intestine, consisting of gastric juices and partly digested food.
Enzyme
a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.
Gastric Juices
a thin, clear, virtually colorless acidic fluid secreted by the stomach glands and active in promoting digestion.
Macronutrients
carbohydrates, proteins, and fats
Mastication
the process of chewing
Bolus
a small rounded mass of a substance, especially of chewed food at the moment of swallowing.
Metabolism
the combination of chemical reactions through which an organism builds up or breaks down materials
Micronutrient
vitamins and minerals
Peristalsis
Involuntary waves of muscle contraction that keep food moving along in one direction through the digestive system.
Villi
Small fingerlike projections on the walls of the small intestines that increase surface area
Gastrointestinal Tract
the structures of the digestive system
Feces
solid wastes; stool