Here is a link to a video that provides information about the aortic root. The aortic root is not a circle - it consists of three distinct "pouches" or "sinuses", called Sinus of Valsalva.
http://www.youtube.com/watch?v=-J_pSBVsSFQ
This one also gives some information about the root and the ascending aorta.
http://www.youtube.com/watch?v=RY7QM...eature=channel
This one goes over the anatomy of the aorta, helping to understand what is the root, what is the ascending segment, etc.
http://www.youtube.com/watch?v=hJ0fb...eature=channel
Arlyss
http://www.youtube.com/watch?v=-J_pSBVsSFQ
This one also gives some information about the root and the ascending aorta.
http://www.youtube.com/watch?v=RY7QM...eature=channel
This one goes over the anatomy of the aorta, helping to understand what is the root, what is the ascending segment, etc.
http://www.youtube.com/watch?v=hJ0fb...eature=channel
Arlyss