Figure 21.

Right ventricular outflow tract.

• 1
  Right ventricle
• 2
  Pulmonary valve
• 3
  Pulmonary trunk
• 4
  Ductus arteriosus
• 5
  Descending aorta
• 6
  Right pulmonary artery
• 7
  Superior vena cava
• 8
  Ascending aorta
• 9
  Right atrium