Lecture on the Heart Structure and Blood Vessels

Overview of Heart Structure

• Four Chambers:
  • Right Atrium
  • Left Atrium
  • Left Ventricle
  • Right Ventricle
• Color Indicators in Model:
  • Right Ventricle: Blue (Deoxygenated Blood)
  • Left Ventricle: Orange (Oxygenated Blood)

Grooves in the Heart

• Atrial Ventricular Groove:
  • Located between Atria and Ventricles.
• Interventricular Septum:
  • Wall between two ventricles.
  • Groove known as Interventricular Groove.

Major Blood Vessels

• Aorta:
  • Sends oxygenated blood throughout the body.
  • Arises from the left ventricle.
• Pulmonary Trunk:
  • Branches into left and right pulmonary arteries.
  • Transports deoxygenated blood.

Veins

• Venae Cavae:
  • Superior Vena Cava
  • Inferior Vena Cava
  • Transport blood to the heart.
• Pulmonary Veins:
  • Carry oxygenated blood from lungs to the left atrium.

Coronary Blood Vessels

• Coronary Arteries:
  • Right Coronary Artery
  • Left Coronary Artery
    • Branches into:
      • Circumflex Artery
      • Anterior Interventricular Artery
  • Marginal Artery

Cardiac Veins

• Great Cardiac Vein
  • Follows the circumflex artery to the back of the heart.
• Middle Cardiac Vein
  • Located in the interventricular septum at the back.
• Small Cardiac Vein
• All veins drain into the Coronary Sinus:
  • Coronary Sinus drains into the right atrium.

Additional Arteries and Veins

• Posterior Interventricular Artery:
  • Joins with the circumflex artery.

Summary

• Blue and red colors in models indicate deoxygenated and oxygenated blood, respectively.
• Arteries carry blood away from the heart, veins carry blood to the heart.
• Coronary arteries and veins are crucial for the heart's own blood supply and drainage.