Name: ________________________________ Date: ____________ Period #: _____ th 7 Grade Life Science Midterm Study Guide Digestive System: 1. Which two organ systems work to break down food and deliver it to the body? 2. Trace the path of food through the digestive system starting with the mouth. 3. Explain how both chemical and mechanical digestion are both possible in the mouth? 4. Explain how food gets down the esophagus. What is that process called? 5. Complete the table below. Nutrient Carbohydrate Description Protein Fat 6. In which two organs does the digestion of food primarily take place? 7. Which nutrient is primarily digested in the stomach? 8. Where are most of the nutrients absorbed into the bloodstream? 9. What is the main job of the digestive system? Examples 10. Which organ would most likely be the cause if you are experiencing diarrhea? Circulatory System: 11. What is the main job of the circulatory system? 12. Complete the table below. Blood Vessel Veins Arteries Capillaries Function Use the graph to answer the following: (13-15) 13. What is the best way to describe the relationship between area and velocity? In other words: As area goes up, the velocity… 14. Which blood vessel has the highest speed? 15. Which blood vessel has the highest blood pressure and velocity? 16. Explain why your heartbeat speeds up as you exercise. Use the graph to answer the questions below: (17-19) Change in Heart Rate over Time Y axis 80 70 60 0 1 2 3 4 5 X axis 17. What do you think starts to happen around the 2 minute mark? 18. How much faster is the heart beating during minute 5 than during minute 1? 19.About how many minutes did it take for this person’s heart rate to go from 60 beats per minute to 80 beats per minute? 20. Where do nutrients leave the bloodstream to enter body cells? Respiratory System: 20. Explain how the respiratory and circulatory systems work together? 21. List the 3 main parts of the respiratory system. 22. Which organ do you breathe out of when you need extra air? Why? 23. List the correct path of air through the respiratory system. 24. Which two human body organs work together to make sure oxygen is transported to other areas of the body? 25. What is the main job of the respiratory system? 26. Where does the exchange of oxygen and carbon dioxide occur? 27. Which organ is most likely the cause of coughing up large amounts of mucus and shortness of breath? Cellular Respiration: 28. What is cellular respiration? 29. What does the circulatory system do to help us get energy in our cells? 30. Which body cell do you think would have the most mitochondria? Why? 31. Write the respiration equation in words? 32. Where do the materials of cellular respiration get processed? Science Processes: 33. Make 1 observation about your house. 34. Make 1 inference about your house. Extra Digestive System Graphic Organizer Organ Mouth Esophagus Stomach Small Intestine Large Intestine Type of Digestion chemical or mechanical? Nutrient(s) Digested/Broken down What nutrient(s) is/are absorbed?