Beginner Internal Thoracic Artery Quiz

Q1. The internal thoracic artery usually arises from which artery?

• Thoracic aorta
• Subclavian artery
• Pulmonary artery
• Axillary artery

Q2. Where does the internal thoracic artery descend?

• Lung parenchyma
• Anterior thoracic wall
• Vertebral canal
• Posterior abdominal wall

Q3. The internal thoracic artery descends approximately how far lateral to the sternum?

• 15 to 20 cm
• 5 to 7 cm
• 10 to 12 cm
• 1 to 2 cm

Q4. Which two terminal branches arise from the internal thoracic artery?

• Superior and inferior thyroid
• Musculophrenic and superior epigastric
• Radial and ulnar
• Bronchial and esophageal

Q5. At approximately which intercostal space does the internal thoracic artery terminate?

• Sixth intercostal space
• First intercostal space
• Third intercostal space
• Eleventh intercostal space

Q6. Which branches of the internal thoracic artery supply anterior intercostal spaces?

• Bronchial arteries
• Lumbar arteries
• Anterior intercostal arteries
• Posterior intercostal arteries

Q7. Which branch accompanies the phrenic nerve?

• Superior epigastric artery
• Posterior intercostal artery
• Bronchial artery
• Pericardiacophrenic artery

Q8. Which terminal branch continues into the anterior abdominal wall?

• Superior epigastric artery
• Musculophrenic artery
• Bronchial artery
• Pericardiacophrenic artery

Q9. Which terminal branch follows the costal margin?

• Superior epigastric artery
• Pericardiacophrenic artery
• Esophageal artery
• Musculophrenic artery

Q10. Which major structure lies medial to the descending internal thoracic artery?

• Humerus
• Vertebral column
• Sternum
• Scapula