Primary lymphatic drainage from the lower body enters the general circulation via the

Primary lymphatic drainage from the lower body enters the general circulation via the

• A. Right subclavian vein
• B. Left subclavian vein
• C. Internal jugular vein
• D. Inferior vena cava

Answer: (B)

Lymph from the lower body returns to the bloodstream primarily through the thoracic duct, which empties at the left venous angle—the junction where the left internal jugular and left subclavian veins meet. From there, the lymph mixes with blood in the left subclavian vein and travels into the central circulation. This is distinct from the right side, where the right lymphatic duct drains lymph from the right upper quadrant into the right venous angle. The inferior vena cava is not a lymphatic entry point.

Lymph from the lower body returns to the bloodstream primarily through the thoracic duct, which empties at the left venous angle—the junction where the left internal jugular and left subclavian veins meet. From there, the lymph mixes with blood in the left subclavian vein and travels into the central circulation.

This is distinct from the right side, where the right lymphatic duct drains lymph from the right upper quadrant into the right venous angle. The inferior vena cava is not a lymphatic entry point.