<p>Respiratory and Circulatory Systems Lab Name: </p><p>How do the Respiratory and Circulatory systems work together? ______.</p><p>Data Tables: </p><p>Heart rate/pulse Time to Turn Phenol Red Table 1 (beats/minute) yellow (seconds)</p><p>Resting Rate</p><p>Rate after Exercise</p><p>Trial 1 Trial 2 Trial 3 Average Average Tidal Table 2 Diameter Diameter Diameter Diameter Radius Volume (cm) (cm) (cm) (cm) (cm) (ml) Tidal Volume</p><p>Trial 1 Trial 2 Trial 3 Average Average Vital Total Table 3 Diameter Diameter Diameter Diameter Radius Capacity Capacity (cm) (cm) (cm) (cm) (cm) (mL) (mL) Lung Capacit y</p><p>Analysis and Conclusion Questions: 1. What happened to your heart rate during exercise? increase/decrease (circle one). Explain why in terms of oxygen demand and carbon dioxide production. 2. The color of the Phenol Red solution change faster/slower (circle one) after exercise. Explain what does this indicate about the concentration of carbon dioxide produced?</p><p>3. How does your tidal volume and vital capacity compare with those of your other classmates? Why might there be some variation in the measurements other than “error in measuring”?</p><p>4. Even though you may exhale as completely as you can, some air still remains in your lungs. Why do you think this is important?</p><p>5. How might vital capacity be important to some musicians?</p><p>6. How do you think smoking would affect your vital capacity? </p><p>7. How do the circulatory and respiratory systems work together in response to increased activity?</p><p>8. As you inhale your diaphragm contracts increasing/decreasing (circle one) the volume of your chest cavity. This also increases/decreases (circle one) the pressure inside you chest cavity causing air to rush in/out (circle one) of your lungs. In your lungs, oxygen is absorbed and carbon dioxide is released. As you exhale the carbon dioxide, your diaphragm relaxes increasing/decreasing (circle one) the volume of you chest cavity. This also causes a corresponding increase/decrease (circle one) in pressure inside the chest cavity forcing the carbon dioxide to rush in/out (circle one) of your lungs.</p>