Two vascular compartments: consist of the widespread carotid artery, internal jugular vein as well as the vagus nerve, on both sides on the neck. The anterior triangle of your neck is created by the anterior border on the sternocleidomastoid muscle, the inferior border with the mandible along with the midline https://www.theorthopaedicandpainpractice.com/treatment-for-neck-pain-headaches/