1. The common carotid artery or either of its branches, the external and internal carotid arteries.
2. Specifically, the common carotid artery, the principal artery on either side of the neck.

A condition in which the carotid arteries become narrowed or blocked.

When the arteries become narrowed, the condition is called carotid stenosis.

Carotid artery disease takes place when sticky, fatty substances called plaque build up in the inner lining of the arteries.

A noninvasive ultrasound test for occlusive disease (closure or blockage) of the extracranial (outer skull) carotid artery.

Contralateral (opposite side) weakness and numbness, aphasia, and ipsilateral (same side) monocular blindness as a result of atherosclerosis (thickening and hardening of the walls of arteries as a result of fat deposits on their inner lining) or other lesion causing obstruction of an internal carotid artery or one of its major banches.

An abnormal narrowing of the carotid artery, often preceding a stroke.