Digestive System Breaks down food into nutrients Made

Digestive System Breaks down food into nutrients.

Made up of: n n n n Mouth Esophagus Stomach Small intestine Large intestine Rectum Anus Food does not travel through: n n Salivary glands Liver Pancreas Gall bladder

Digestive Tract n Food travels through the following organs: 1. Mouth 2. Esophagus 3. Stomach 4. Small intestine 5. Large Intestine 6. Rectum 7. Anus

Types of Digestion 1. Mechanical Digestion • 2. Grinding and mashing of food into smaller pieces. Chemical Digestion • Breaking down of food into nutrients using acids and enzymes

1. Mouth n n n Digestion begins here. Both mechanical and chemical digestion take place. Teeth will chew and mash food into smaller pieces. (mechanical digestion) Salivary glands found around your mouth produce saliva that begin chemical digestion of carbohydrates. Changes starches to sugar.

2. Esophagus n n n The esophagus is a long tube that connects the mouth to the stomach. Food moves through the esophagus by peristalsis. Peristalsis is a rhythmic muscle contraction that squeeze food down.

3. Stomach Bag-like organ where digestion occurs. n n Mechanical digestion takes place when the stomach churns. Chemical digestion occurs here in an acidic environment

4. Small Intestine Long but narrow tube where final digestion takes place. n Nutrients leave the digestive system and enter the blood stream(circulatory system) here. Villi

5. Large Intestine n Undigested food ends up in the large intestine. 6. Rectum -Solid waste or feces is stored here. 7. Anus -Solid waste leaves the body through here.

teeth mouth salivary glands esophagus liver gall bladder large intestine small intestine rectum stomach pancreas