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Understanding Cardiovascular System: Anatomy & Function

Explore the major functions and components of the cardiovascular system, including anatomy, blood flow through the heart, intrinsic conduction system, ECG phases, and cardiac terms. Learn about the vascular system, coronary circulation, and blood components such as red blood cells and blood pressure.

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Understanding Cardiovascular System: Anatomy & Function

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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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