raw material the body get from food

when a person cannot get enough to eat or when the food eaten does not represent a balanced diet

compound made up of carbon, hydrogen, and oxygen atoms; major source of energy for the human body

macromolecule that contains carbon, hydrogen, oxygen, and nitrogen; needed by the body for growth and repair

Amino acids that are needed, but cannot be made by the body; they must be eaten in foods

glycerol molecule attached to a series of fatty acid chains

Essential nutrients that do not yield energy, but that are required for growth and proper functioning of the body.

inorganic element that the body needs for most of its metabolic functions

A unit of heat used to measure the energy your body uses and the energy it receives from food

a protein that speeds up chemical reactions

glands of the mouth that produce saliva, a digestive secretion

small amount of processed food

muscular tube that connects the mouth to the stomach.

involuntary waves of muscle contraction that keep food moving along in one direction through the digestive system.

semi-liquid mixture of stomach enzymes and food particles

first part of the small intestine

a large lobed glandular organ in the abdomen, involved in many metabolic processes such as producing bile

organ that makes digestive enzymes and hormones

process of food being moved through the intestinal wall and into the bloodstream

fingerlike projection of the inner surface of the small intestine that functions in absorbing nutrients

waste product formed in the liver, filtered out of the blood by the kidneys, and excreted in urine

functional unit of the kidney

small network of capillaries encased in the upper end of a nephron; where the filtration of blood takes place

process in the kidney that puts useful substances (water, glucose, amino acids) back into the blood

tube that carries urine from the kidney to the urinary bladder

tube leading from the urinary bladder to the outside of the body