Intermediate Internal Thoracic Artery Branches Quiz

Q1. Which branches of the internal thoracic artery give rise to important medial mammary branches?

• Vertebral branches
• Musculophrenic branches only
• Perforating branches
• Superior epigastric branches only

Q2. Perforating branches supplying the breast emerge through which structures?

• Intervertebral foramina
• Carpal tunnel
• Intercostal spaces
• Greater sciatic foramen

Q3. Which perforating branches of the internal thoracic artery are especially important contributors to the breast?

• Subcostal branches only
• Eighth through tenth posterior intercostal branches
• Lumbar branches
• Second through fourth intercostal perforating branches

Q4. Internal thoracic artery branches supplying the breast anastomose with branches of which artery laterally?

• Femoral artery
• Axillary artery
• Internal carotid artery
• Inferior mesenteric artery

Q5. Which artery is an especially important lateral counterpart to the medial mammary branches of the internal thoracic artery?

• Deep brachial artery
• Radial recurrent artery
• Posterior circumflex humeral artery only
• Lateral thoracic artery

Q6. The internal thoracic artery descends approximately parallel to which structure?

• Lateral border of the sternum
• Spine of the scapula
• Surgical neck of the humerus
• Vertebral spinous processes

Q7. Which vessels contribute to breast supply from the posterior intercostal circulation?

• Middle meningeal branches
• Posterior tibial branches
• Lateral cutaneous branches of posterior intercostal arteries
• Superior cerebellar branches

Q8. Why does the breast maintain arterial supply from several different arterial sources?

• The breast contains no capillaries
• Each breast is supplied by only one terminal artery
• The internal thoracic artery ends inside the nipple
• Multiple arterial sources form an anastomotic network

Q9. Which terminal branch of the internal thoracic artery continues inferiorly into the anterior abdominal wall?

• Deep circumflex iliac artery
• Inferior epigastric artery
• Superficial epigastric artery
• Superior epigastric artery

Q10. Which statement best describes the arterial pattern of the medial breast?

• It receives blood only from posterior cerebral arteries
• It receives internal thoracic branches that anastomose with other mammary vessels
• It is supplied exclusively by the brachial artery
• It lacks direct arterial supply