Word Bank Anus Esophagus Gallbladder Large Intestine Liver Mouth Pancreas Salivary Glands Rectum Small Intestines Stomach Sponge #8 1 11 2 10 3 9 4 5 8 6 7

Salivary glands mouth esophagus liver stomach gallbladder pancreas Small intestines Large intestines rectum anus

KEY CONCEPT The digestive system breaks down food into simpler molecules.

In 1822, Alexis St. Martin was shot in the stomach and treated by William Beaumont, an army surgeon The bullet had left a small hole in his stomach Beaumont persuaded St. Martin to let him observe the digestive process by tying foods to string, putting them into the stomach, and observing how the food was digested

The digestive system is a collection of organs that breaks down food into energy that can be used in cells mouth esophagus liver gallbladder large intestine small intestine rectum/anus

After digestion is complete, nutrients are absorbed and transported to all cells. Undigested materials are eliminated as liquid and solid wastes (urine/feces) mouth esophagus liver gallbladder large intestine small intestine rectum/anus

Digestion begins in the mouth and continues in the stomach. Mechanical (teeth) and chemical (saliva) digestion break down food. Peristalsis moves food through the organs. esophagus muscles contract muscles relax food stomach

Digestion of carbohydrates begins in the mouth. Digestion of proteins occurs in the stomach. Digestion of fats and sugars occur in the small intestine.

Most digestion takes place in the small intestines. The pancreas, liver, and gallbladder aid in digestion. pancreas helps digest fat and protein bile from the liver/gallbladder helps digest fats liver stomach bile chyme bile enzymes gallbladder pancreas duodenum

Sponge # 9 1. What is the main function of the digestive system? 2. Describe how the mouth uses both mechanical and chemical digestion. 3. What three organs aide the small intestine with digestion? 4. If you ate a meal of spaghetti and meatballs, where would digestion of the pasta begin? The meat?

What is the main function of the digestive system? To break down food into smaller molecules for the body to absorb and use for energy. Describe how the mouth uses both mechanical and chemical digestion. Mechanical: teeth chew food Chemical: enzymes in saliva break down starches What three organs aide the small intestine with digestion? Gallbladder, liver, and pancreas If you ate a meal of spaghetti and meatballs, where would digestion of the pasta begin? The meat? Spaghetti: in mouth- starches Meatballs: in stomach- proteins

Circulatory and Digestive System Posters Title on top Describe the FUNCTION (job) of your organ Draw a picture Answer all questions on prompt Color Use Big font