What is the main source of blood supply to head face and neck?

Common carotid artery

- Ascends along the anterolateral aspect of the neck and bifurcates approximately near the level of the angle of the mandible

- Its two branches are- the external and internal carotid arteries which serve almost all of the structures in the head, face and neck.

- The vertebral arteries, which arise from the subclavian arteries, also contribute blood supply to the head and neck.