Internal jugular vein

The internal jugular vein is a major blood vessel in your neck that drains blood from the brain, face, and neck muscles back toward the heart. It runs alongside the carotid artery and is easily accessible for medical procedures like blood draws or inserting catheters. Its main function is to help regulate blood flow from the head, maintaining proper circulation. The internal jugular vein is an essential part of your body's circulatory system, ensuring that blood from your head and neck is efficiently returned to your heart for oxygenation and recycling.