Where does the food go The Human Digestive

Where does the food go The Human Digestive System

How the Body Works : The Human Digestive System

Where does the food go? The digestive system is a series of hollow organs joined in a long, twisting tube from the mouth to the anus.

Why Digestion is important? Digestion is the process by which food and drink are broken down into their smallest parts so that the body can use them to build and nourish cells and to provide energy.

Types of Digestion Mechanical (physical) • • • Chew Tear Grind Mash Mix Chemical • • • Catabolic reactions Enzymatic hydrolysis Carbohydrate Protein Lipid

Digestion • Phases – Ingestion – Movement – Digestion – Absorption – Further digestion 6

System Organization • Gastrointestinal (Gl) tract (Alimentary canal) – Tube within a tube – Direct link/path between organs – Structures 7

Digestive System Organization • Accessory structures – Not in tube path – Organs • • • Teeth Tongue Salivary glands Liver Gall bladder Pancreas 8

Digestive System Quiz TRUE OR FALSE • The job of the digestive system is to break food down so that our bodies can use it as fuel or energy. TRUE or FALSE • Your stomach is located right behind your belly button. TRUE or FALSE • Your small intestine is approximately 20 - 25 inches long. TRUE or FALSE