Activity 3: "Digestive Team Mates" Objective: Illustrate how ingestion, absorption, assimilation, and excretion takes place in the interaction of Digestive System with the Circulatory, Respiratory and Excretory System. Direction: Based from Activity 2, identify which digestive process takes place such as Ingestion, Digestion, Absorption, Assimilation and Excretion. Choose the body system involved in each process by using the following symbols: Digestive - Respiratory - Circulatory - Excretory Functions Food is broken down into Digestive Process Body System Involved 1. Ingestion 2. A smaller pieces with the help of the saliva, teeth and tongue. The food is then swallowed with the help of tongue and saliva and pushes it down the esophagus. It uses muscular contractions to 18 3. move food through the digestive tract and needs axygen to function properly. As food enters the stomach, it mix the food. 4. 5. and liquid with digestive juices. The digestive juices and enzymes break down the food and prepare to provide our body with energy. When food moves into the small intestines, it absorbs most of the nutrients in your food. Special cells 6. 7. help absorb nutrients cross the intestinal lining into your bloodstream. These nutrients are then assimilated by each cell of the body in the form of 8. energy. The undigested food enters your large intestine from your small intestine. It then reabsorbs water that is used in digestion and 9. 10. eliminates undigested food and fiber, causes food waste products which is then removed from the body. Guide Question: How does the digestive system interact with the Circulatory, Respiratory and Excretory system?

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