After lumbar lymph nodes, which lymphatic trunk comes next in the described drainage sequence?

After lumbar lymph nodes, which lymphatic trunk comes next in the described drainage sequence?

• A. Lumbar Trunks
• B. Cisterna Chyli
• C. Thoracic Duct
• D. Right Lymphatic Duct

Answer: (D)

Lymph from the lower body moves first through the lumbar lymph nodes into the lumbar trunks. Those trunks converge to form the cisterna chyli, a collecting sac, and from there the lymph continues as the thoracic duct, which ascends to drain into the left venous angle. The right lymphatic duct, on the other hand, collects lymph from the right side of the head, neck, thorax, and upper limb, not from the lower body, so it isn’t next in this drainage sequence.

Lymph from the lower body moves first through the lumbar lymph nodes into the lumbar trunks. Those trunks converge to form the cisterna chyli, a collecting sac, and from there the lymph continues as the thoracic duct, which ascends to drain into the left venous angle. The right lymphatic duct, on the other hand, collects lymph from the right side of the head, neck, thorax, and upper limb, not from the lower body, so it isn’t next in this drainage sequence.