heart

• location of the heart

  within the paricardial sac, posterior to the sternum
• 4 chambers of the heart

  -left ventricle +

  -left artium +

  -right ventricle +

  right atrium

  
• the left side of the heart receives oxygenated blood from the lungs
• the right side of the heart receives deoxygenated blood from the body
• layers of the pericardium +

  • Fibrous ( outer layer of dense irregular connective tissue)+
  • Serous (inner layer of mesothelium), consists of two layers:+
  • -parietal (underneath fibrous paricardium)+
  • -visceral (lays over heart)
• ventricles function

  • Ventricles are thick walled chambers that forcefully pump blood out of the heart
• Artrium function

  • Atria are thin walled chambers that receive blood from the veins