Digestive System

Digestive system

•The body system that converts food into usable energy

The Process

•The mouth and teeth•The stomach and the small intestine•The liver, gallbladder, and pancreas

Mouth and Teeth

•Digestion: The process of changing food into material the body can use

•Digestive enzymes: Speed up the break down of food

•Saliva: A fluid made by the salivary glands that moistens and softens food

The stomach and small intestine•Esophagus: A muscular tube that

pushes food down from the mouth to the stomach

•Small intestine: A coiled, tubelike organ that is about 20 feet long where the nutrients are separated from the bulk of the food

Liver, Gallbladder, and Pancreas•Liver: Body's largest internal organ, it

produces bile, a substance that helps break down fats and gets rid of toxins from body

•Gallbladder: Stores the bile and releases it to small intestine when needed

•Pancreas: Makes additional digestive enzymes

Excretory System

•Your body’s waste removal system

Excretory System•Excretion: The process of removing wastes

from the body•Colon: Food particles that cannot be digested

move from the small intestine to here (aka large intestine)

•Cecum: A pouch that joins the small and large intestine

•Kidneys: Organs that filter water and dissolved wastes from the blood and help maintain proper levels of water and salts in the body