What is valve commissure?
In the heart, a commissure is the area where the valve leaflets abut. When such an abutment is abnormally stiffened or even fused, valvular stenosis results, sometimes requiring commissurotomy. The term may also refer to the junction of the upper and lower lips (see labial commissure of mouth).
What is the structure of the aortic valve?
The aortic valve consists of three semi-lunar shaped leaflets and three dilations known as the sinuses of Valsalva. It lies within the aortic root which bridges the left ventricle to the ascending aorta.
What are the three cusps of the aortic valve?
The aortic valve has three cusps: the left coronary cusp (LCC), the right coronary cusp (RCC), and the non-coronary cusp (NCC).
What are the 3 aortic valves?
The aortic valve normally has three cusps however there is some discrepancy in their naming. They may be called the left coronary, right coronary and non-coronary cusp. Some sources also advocate they be named as a left, right and posterior cusp.
What does commissure mean?
Definition of commissure 1 : a point or line of union or junction especially between two anatomical parts (such as adjacent heart valves) 2 : a connecting band of nerve tissue in the brain or spinal cord.
What are the 3 Commissures?
Commissures are fiber tracts that are defined to connect corresponding cortical areas of both telencephalic hemispheres with each other. They comprise the anterior commissure, the hippocampal commissure, and the corpus callosum.
What is the structure and function of the aortic valve?
The aortic valve is located between the aorta and the heart’s left ventricle. The pulmonary vein delivers oxygenated blood to the heart’s left atrium. With each of the heart muscle’s contractions, oxygenated blood exits the left ventricle through the aortic valve. In most cases, three flaps comprise the valve.
Which heart valve is the strongest?
The left ventricle is the largest and strongest chamber in your heart. The left ventricle’s chamber walls are only about 1.0 to 1.3cm, but they have enough force to push blood through the aortic valve and into your body.
What is a commissure in medical terms?
1 : a point or line of union or junction especially between two anatomical parts (such as adjacent heart valves) 2 : a connecting band of nerve tissue in the brain or spinal cord.