1. Digestive System

2. Challenge ? List some effects that might happen if your small intestine did not have villi. –

3. Connection If the small intestine is on average 6 meters long (nearly 20 feet), and the large intestine is 1.5 meters long (nearly 5 feet), why is the small intestine called small and the large intestine called large?

4. Vocabulary Digestion- – Mechanical- – Chemical- See Objective #1

5. OBJECTIVENOTES 1. Trace the path of food from beginning to end, describing the parts and functions of the digestive system. Mouth Esophagus Stomach Small intestine & villi Pancreas Liver & Gall Bladder Large intestine rectum 2. Compare mechanical digestion and chemical digestion 3. Describe how the digestive system works closely with at least 2 other systems Cardiovascular – ____________

6. OBJECTIVENOTES 1. Trace the path of food from beginning to end, describing the parts and functions of the digestive system. Mouth - opening to digestive system, mechanical and chemical digestion Esophagus - tube from mouth to stomach, peristalsis (muscle contractions) move the food Stomach- baglike organ, mechanical digestion by muscular contractions, chemical digestion by acid Small intestine & villi- long narrow tube lined with projections(villi) which absorb the nutrients from food Pancreas- sponge-like organ, makes enzymes that digestion protein and neutralize stomach acid Liver & Gall Bladder- large, lobed organ producing bile (breaks down fat) which is stored in the gall bladder(small bag-like) until needed Large intestine – wide tube absorbs moisture form waste turning it into feces Rectum- End of large intestine, stores feces until it is eliminated through the anus 2. Compare mechanical digestion and chemical digestion 3. Describe how the digestive system works closely with at least 2 other systems Cardiovascular – transports the nutrients from the digestive system to all cells of the body Muscular- smooth muscles contract to move the food along the digestive tract

7. To Do Holt Life Science Pages 568-575 Guided Notes Tater Tot Vacation Scrapbook (Fill in your favorite food)