Sports Science: Cardio-respiratory exercise physiology

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• 2. Deliver deoxygenated blood back to the heart, less muscular and fibrous, contain valves to prevent back-flow (6, 5)
• 3. Maintenance of a constant internal environment (6, 11)
• 4. Volume of air breathed in and out in any one breath (6, 5, 6)
• 5. (Heart Rate x Stroke Volume) / 1000 (6, 7, 6)
• 6. Maximum volume of air that can be exhaled after a maximal inhalation (6, 5, 8)
• 7. The process is passive as the Diaphragm just relaxes and recoils into the original position (8, 2, 10)
• 8. Narrow vessels, thin walls, they form an extensive branching network, through tissues, the site of exchange (6, 11)
• 9. These vessels that are relatively large in diameter, thick muscular walls, considerable pressure exerted, transport blood away from the heart (6, 8)