Two vascular compartments: consist of the popular carotid artery, inner jugular vein and the vagus nerve, on each side from the neck. worry - (physics) force that generates strain on the Bodily system; "the depth of strain is expressed in models of power divided by units of spot" The neck https://seingalp780qfs8.blogdomago.com/35391134/what-does-neck-headache-physiotherapy-singapore-mean