The right lymphatic duct drains into the venous system at which site?

• A Left brachiocephalic vein
• B Junction of right internal jugular and right subclavian veins ✓
• C Superior vena cava directly
• D Junction of left internal jugular and left subclavian veins

Explanation

The right lymphatic duct, which drains the right upper quadrant of the body (right arm, right side of head and thorax, right lung, right side of heart), empties into the junction of the right internal jugular and right subclavian veins (right jugulosubclavian angle). The thoracic duct empties at the left jugulosubclavian angle. Mistaking these sites is clinically important during central line insertion and in understanding chylothorax laterality.

Reference: BD Chaurasia's Human Anatomy, 8th ed.

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Written and medically reviewed by the StethoPrep medical team.