MICROANATOMY

Detailed explanation-1: -After collecting in the cisterna chyli, lymph flows proximally through the thoracic duct, and ultimately empties in the venous circulation at the junction of the left internal jugular and subclavian veins.

Detailed explanation-2: -In a healthy body, the lymphatic channels from the liver and mesentery drain toward the thoracic duct, which is the main lymphatic vessel responsible for lymph drainage. In most people, the thoracic duct drains into the subclavian vein on the left side.

Detailed explanation-3: -The primary function of the subclavian vein is to drain deoxygenated blood from the upper region of the body-including the arms and the shoulder areas-and transport it back to the heart. 6 Another important function of the subclavian is to collect lymph fluid from the lymphatic system from the internal jugular vein.