1. The digestive and urinary system Bye: Mason Semprini and Aidan Smith CHAPTER 4 LESSON 3

2. DIGESTIVE SYSTEM The digestive system is a process that changes food into forms that bodies can use During digestion, food is broken down into very small materials Many organs work together to digest food

3. THE MOUTH AND ESOPHAGUS Chewing also makes the job of the rest of the digestive system The esophagus is a tube that carries food to the stomach the esophagus does not use gravity to push the food down to the stomach, it uses rings of muscles

4. THE STOMACH There is a tight muscle at the bottom of your esophagus Your stomach is under your ribs to the lower left As strong muscles in the stomach walls squeeze, the food and acid mix

5. INTESTINES The small intestine is a narrow, winding tube Here food is made less acidic and broken down into small particles that the blood can absorb Muscle from the small intestines move food in one direction Food that can’t be digested in the small intestine goes to the large intestine

6. KIDNEY The vein transports cleaned blood out of the kidney and back to the heart The tubes carrying wastes come together to make larger tubes The artery transports blood the kidney to be cleaned

7. CONCLUSION thank you for your time!!!!