Absorption
The process by which nutrient molecules pass through the wall of the digestive system into the blood
Bile
A substance produced by the liver that breaks up fat particles.
Chyme
the pulpy acidic fluid that passes from the stomach to the small intestine, consisting of gastric juices and partly digested food.
Enzyme
protein that acts as a biological catalyst
Gastric juices in stomach
hydrochloric acid, enzymes, mucus
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
Micronutrients
vitamins, minerals, water
Peristalsis
the process of wave-like muscle contractions of the alimentary tract that moves food along
Villi
Tiny finger-shaped structures that cover the inner surface of the small intestine and provide a large surface area through which digested food is absorbed
Gastrointestinal Tract
the structures of the digestive system
feces
solid wastes; stool