Blood Flow of the Heart

Introduction

• The heart is divided into two sides: the right and left sides, each with distinct functions.
• Right side: Transports deoxygenated blood to the lungs.
• Left side: Distributes oxygenated blood received from the lungs throughout the body.

Right Side Blood Flow

1. Blood Entry

   • Blood enters the right side through the superior vena cava and inferior vena cava.
   • Deoxygenated blood is collected in the right atrium.

2. Valve Passage

   • Blood moves from the right atrium through the tricuspid valve ("Try before you buy") into the right ventricle.

3. Pulmonary Circulation

   • From the right ventricle, blood is pushed through the pulmonic valve into the pulmonary artery.
   • Blood travels to the lungs for oxygenation.

4. Gas Exchange in Lungs

   • Occurs in alveoli sacs and capillaries.
   • Oxygen is absorbed and carbon dioxide is expelled from the blood.

Left Side Blood Flow

1. Oxygenated Blood Entry

   • Oxygenated blood returns from the lungs via the pulmonary vein to the left atrium.

2. Valve Passage

   • Blood passes from the left atrium through the bicuspid (mitral) valve into the left ventricle.

3. Systemic Circulation

   • The left ventricle pumps blood through the aortic valve into the aorta.
   • Blood is distributed throughout the body to replenish organs and tissues.

Conclusion

• Understanding the sequence of valves and circulatory pathways is crucial for mastering the blood flow of the heart.
• For further practice, a quiz is available to test knowledge on heart blood flow.
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