IMMUNOLOGY

Detailed explanation-1: -The right lymphatic duct receives lymph from the right side of the head, neck and thorax and right upper limb. It drains into the systemic venous system at the junction of the right internal jugular and right subclavian vein or right brachiocephalic vein within the neck.

Detailed explanation-2: -The lymph flows through the right lymphatic duct and the thoracic duct into the right and left brachiocephalic veins.

Detailed explanation-3: -The thoracic duct occasionally divides into a right and left duct, with the left entering the venous system as normal, and the right draining into the right subclavian vein. The duct may also drain into the left internal jugular vein, or into the left brachiocephalic vein.

Detailed explanation-4: -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.