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Topic 2 Exercise Physiology: Ventilatory System, Cardiovascular System Study guide for IB SEHS 1. What are the principal structures of the Ventilatory System? 2. What are the functions of the conducting airways? o Low resistance pathway for air flow o Defense against chemicals and other harmful substances o The warming and moistening of air 3. Define the following terms o Pulmonary ventilation o Total lung capacity o Vital capacity o Tidal volume o Expiratory reserve volume o Inspiratory reserve volume o Residual volume 4. Explain the mechanics of breathing/ventilation o Diaphragm, intercostal muscles, volume and air pressure should be discussed 5. Why is there an increase in the rate and depth of ventilation during exercise? 6. What is the role of hemoglobin in oxygen transport? 7. Explain the process of gaseous exchange at the alveoli. 8. What is cardiovascular drift, and why does this occur? 9. Define systolic and diastolic blood pressure? 10. What is considered high blood pressure? 11. What happens to blood pressure during static and dynamic exercises? Why does it happen? 12. What is Heart Rate? Stroke Volume? Cardiac Output? 13. What is VO2max? What is VO2max often referred to as? 14. You should be able to compare the Heart Rate (HR), Stroke Volume (SV), Cardiac Output (Q) and VO2max between someone who is trained and untrained. Actual amounts/ numbers are not needed. 15. Describe the cardiovascular adaptations resulting from endurance exercise training. 16. What happens to blood during exercise? 17. Explain the pathway of blood (circulation). 1 18. What is the difference between pulmonary and systemic circulation? 19. What is the composition of Blood? Blood transports Proteins, electrolytes, gases, nutrients, waste products and hormones. 20. What are the functions of erythrocytes, leucocytes and platelets? 21. Describe the intrinsic and extrinsic regulation of heart rate, and the sequence of excitation of the heart muscle. (Hint: SA and AV nodes). 2