What are the three main veins that drain the head and neck?

The three main veins that drain the head and neck are the internal jugular, external jugular, and vertebral veins.

The internal jugular vein is primarily responsible for draining blood from the brain, face, and neck. It runs alongside the carotid artery, collecting blood from the deep structures of the head and neck, including the cranial cavity. This vein is crucial for venous return from intracranial structures.

The external jugular vein drains the superficial tissues of the head and neck. It collects blood from the face and superficial aspects of the head, providing an essential outlet for venous blood from these areas.

The vertebral vein accompanies the vertebral artery and drains blood from the cervical spine and surrounding tissues. It plays a significant role in draining the posterior aspects of the neck.

Together, these three veins effectively manage the venous drainage of the head and neck regions, ensuring that blood is returned efficiently to the cardiovascular system.