👉 Subcinctorium is a structure in the human body that separates the internal jugular vein from the external jugular vein. It is located on the right side of the neck, between the sternum and the cricoid cartilage. The subcinctorium is an important anatomical feature because it provides blood flow to the carotid sinus (the main source of venous return to the brain) through a small opening called the subclavian artery. This allows for more efficient distribution