Intermediate Parasternal Lymph Nodes Quiz

Q1. Which portion of the breast most commonly drains toward parasternal lymph nodes?

• No part of the breast
• Only the lateral portion
• Medial portion
• Only the nipple

Q2. Why are parasternal nodes closely related to the internal thoracic artery?

• The nodes arise from the artery
• The nodes accompany the internal thoracic vessels
• The artery drains lymph from the nodes
• The artery passes through each node

Q3. Which pleural region can contribute lymph to parasternal nodes?

• Pulmonary alveoli directly
• No pleural region
• Visceral pleura exclusively
• Anterior parietal pleura

Q4. Which thoracic structure can contribute lymph to parasternal nodes through anterior pathways?

• Aortic valve
• Pulmonary valve
• Diaphragm
• Tracheal lumen

Q5. Parasternal lymphatics from opposite sides can communicate across which region?

• Femoral triangle
• Posterior cranial fossa
• Popliteal fossa
• Anterior thoracic wall

Q6. Which lymphatic trunks can receive efferent drainage from parasternal nodes?

• Lumbar trunks
• Intestinal trunk
• Bronchomediastinal trunks
• Jugular trunks exclusively

Q7. Which nodes are more closely associated with the posterior thoracic wall than parasternal nodes?

• Intercostal lymph nodes
• Submental lymph nodes
• Parasternal lymph nodes
• Pulmonary lymph nodes

Q8. Which feature distinguishes parasternal nodes from intercostal nodes?

• Location near rib heads
• Location near the carina
• Location beside the sternum
• Location at the pulmonary hilum

Q9. Why can parasternal nodes receive lymph from both thoracic and abdominal structures?

• They lie inside the abdominal cavity
• They drain the entire gastrointestinal tract
• Their drainage territory crosses the thoracoabdominal boundary
• They originate from abdominal arteries

Q10. Where does lymph from parasternal nodes ultimately return?

• Aortic lumen
• Coronary arteries
• Venous circulation
• Pulmonary arteries