digestive system

digestive system   Dan system789

The digestive system includes the organs of the alimentary canal and accessory structures The alimentary canal forms a continuous tube that is open to the

Your Digestive System and How It Works The digestive system does important work for the body Food isn't in a form the body can readily use, The digestive system ingests and digests food, absorbs released nutrients, and excretes food components that are indigestible The six activities involved in

สดฟุตบอลคืนนี้ Many organs make up the digestive system Digestion begins the moment food is chewed and travels from the mouth, down the esophagus, and into the stomach  Human Digestive System is a group of organs