Digestive System How our body gets energy and gets rid of waste
Digestive System How our body gets energy and gets rid of waste
Digestive System
• Function– To get energy out of the food and liquids we eat by breaking it down
• Doctor: Gastroenterologist
Digestive System
• Types of Digestion– Mechanical – physical movement of the
food to break it down. Happens in the mouth, stomach.
– Chemical – when chemicals are added to the food to break it down. Happens in the mouth, stomach, and small intestine
– Nutrient Absorption – taking the good stuff the body needs out of the food. Happens in the small intestine.
– Water Absorption -- taking the water out of the food and liquids you eat. Happens in the large intestine or colon.
Digestive System – Structure • Structure is the look and size of a part.
Parts of the Digestive System
• Mouth – Mechanical digestion using the teeth and chemical digestion from the chemicals released from the salivary glands.
• Esophagus – Mechanical Digestion by pushing the food from the mouth to the stomach
• Stomach – Mechanical digestion through churning the food and Chemical Digestion with the chemicals given from the liver, gallbladder, and pancreas.
• Liver/Gallbladder/Pancreas – gives chemicals to the stomach to help breakdown. Bile and insulin are chemical names.
• Small Intestine –finishes digestion through chemical digestion and absorbs nutrients. Examples are minerals, vitamins, proteins, carbohydrates, and fats.
• Large Intestine/Colon – absorbs water and makes solid waste• Rectum/Anus – gets rid of solid waste
Mouth
Esophagus
LiverStomach
Gallbladder Pancreas
Colon/Large Intestine Small Intestine
Appendix Rectum
Anus
Homeostasis
• All parts of your body working together to be healthy and balanced.
• How does your digestive system help keep your body in homeostasis?– Gets energy– Removes solid waste