Answer:
The four principal arteries of the neck and head
A bruit over the carotid region is important because it may indicate the presence of atherosclerotic plaque in the carotid arteries. Thromboembolism from atherosclerotic plaque at the carotid artery bifurcation
Pract Neurol 2002;2:221-224 doi:10.1046/j.1474-7766.2002.00078.x
Six Interactive Carotid Artery Exam Case Studies
http://www.practicalclinicalskills.com/carotid-course-contents.aspx?courseid=105