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KINESIOLOGY

KINESIOLOGY. CARDIOVASCULAR ANATOMY AND FUNCTION. Major Cardiovascular Functions. w Delivery. w Removal. w Transport. w Maintenance. w Prevention. BLOOD FLOW THROUGH THE HEART. After blood has left the lungs, which chamber of the heart does it enter?

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KINESIOLOGY

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  1. KINESIOLOGY CARDIOVASCULAR ANATOMY AND FUNCTION

  2. Major Cardiovascular Functions w Delivery w Removal w Transport w Maintenance w Prevention

  3. BLOOD FLOW THROUGH THE HEART • After blood has left the lungs, which chamber of the heart does it enter? • Where does the left ventricle pump blood to? • Which chamber of the heart does blood return to that has been through the systemic system?

  4. Cardiovascular System • Pulmonary Circuit • To the lungs and back • Systemic Circuit • To the rest of the body and back

  5. THE HEART

  6. THE CHAMBERS OF THE HEART w The atria are smaller than the ventricles w Why is the left ventricle thicker than the right ventricle?

  7. INTERCALATED DISKS • What are intercalated disks and what is their function?

  8. THE INTRINSIC CONDUCTION SYSTEM

  9. THE INTRINSIC CONDUCTION SYSTEM • What is the function of the SA node? • What is the function of the AV node? • The AV bundle (bundle of His)? • Bundle branches: right and left? • Purkinje fibers?

  10. Electrocardiogram (ECG) w Depolarization and Repolarization. What are they? w Electrical activity of the heart increases during both w The P wave? w The QRS complex? w The T wave?

  11. PHASES OF THE RESTING ECG Atrial repolarization

  12. PHASES OF THE RESTING ECG P QRS

  13. CONTROL OF THE HEART w Parasympathetic Nervous System. wSympathetic Nervous System. w Epinephrine and norepinephrine.

  14. CARDIAC TERMS • Heart Rate (40 million beats per year) • Bradycardia • Tachycardia • Stroke Volume • Cardiac Output (1,400 gallons a day) • Cardiac Cycle (next slide)

  15. CARDIAC CYCLE w Events that occur between two consecutive heartbeats (systole to systole) wSystole? wDiastole?

  16. THE VASCULAR SYSTEM w Arteries w Arterioles w Capillaries w Venules w Veins 100,000 miles of blood vessels

  17. ARTERIES

  18. ARTERIOLES

  19. CAPILLARIES

  20. VEINS

  21. CORONARY CIRCULATION

  22. CORONARY ARTERIES • Right Anterior Descending Artery • Left Anterior Descending Artery • Circumflex Artery

  23. Coronary Artery Disease

  24. Coronary Artery Disease

  25. THE BLOOD • Red Blood Cells • Hematocrit • Blood Pressure

  26. Red Blood Cells Hemaglobin

  27. Hematocrit

  28. Blood Pressure w Systolic and Diastolic. What’s the difference? w What is a normal systolic blood pressure reading? w What is a normal diastolic blood pressure reading?

  29. Blood Pressure

  30. Blood Pressure

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