Absortion
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
Partially digested, semiliquid food mixed with digestive enzymes and acids in the stomach.
enzyme
A type of protein that speeds up a chemical reaction in a living thing
gastric juices
Secretions from the stomach lining that contain hydrochloric acid and pepsin, an enzyme that digests protein.
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
Peristalsis
the involuntary constriction and relaxation of the muscles of the intestine or another canal, creating wavelike movements that push the contents of the canal forward.
Villi
Small fingerlike projections on the walls of the small intestines that increase surface area
gastrointestinal
pertaining to the stomach and intestines
feces
solid wastes; stool
Micronutrient
vitamins and minerals