MICROANATOMY

Detailed explanation-1: -The major lymphatic vessels are: the thoracic duct: It begins near the lower part of the spine and collects lymph from the pelvis, abdomen, and lower chest. The thoracic duct runs up through the chest and empties into the blood through a large vein near the left side of the neck.

Detailed explanation-2: -The thoracic duct is the main lymphatic vessel for the return of chyle/lymph to the systemic venous system. It drains lymph from both lower limbs, abdomen (except the convex area of the liver), left hemithorax, left upper limb and left side of face and neck.

Detailed explanation-3: -Channels that join the jugular lymph sacs to the cisterna chyli become the thoracic duct (or left lymphatic duct) and the right lymphatic duct. The retroperitoneal sac establishes connections with the cisterna chyli but loses its connections with the nearby veins.