What is sinus aortae?

Sinus aortae is also known as aortic sinus or aortic root. It is a dilation or enlargement that exists between the ascending aorta and the aortic valve. The sinus aortae is a critical part of the heart's anatomy as it functions as a reservoir for blood and helps to maintain the normal flow of blood from the heart to the rest of the body. The sinus aortae also contains three aortic sinuses that correspond to the three cusps or leaflets of the aortic valve. They are called right coronary sinus, left coronary sinus, and non-coronary sinus. These sinuses serve as the site for the origins of the coronary arteries. The sinus aortae is commonly affected by aortic aneurysm, which is a life-threatening condition that requires immediate medical attention.