Aortic valve prevents backflow of blood into the left ventricle and creates the second, dubb sound.
The mitral, tricuspid, pulmonary, and aortic valves are the four heart valves that keep blood flowing in the right direction. Flaps (leaflets) on each valve open and close once per heartbeat.
The mitral and tricuspid valves transport blood from the upper chambers of the heart (the atria) to the lower chambers of the heart (the ventricles). The aortic and pulmonary valves transport blood to the lungs and the rest of the body via the ventricles.
Blood flowing through the heart chambers creates heart sounds as the cardiac valves open and close during the cardiac cycle. The vibrations of these structures caused by blood flow produce audible sounds.
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Amino acids all contain nitrogen and these are the building blocks that make up the proteins in your hair, muscles, skin and other important tissues. Nitrogen is an important part of your DNA, which defines what you are like in many ways.
The properties of water that contribute To The formation of the meniscus are:
Meniscus is defined as the upward or downward curve located at the surface of a liquid in a tube.
When water is placed in a tube or wettable container, a concave or downward meniscus is formed due to surface tension created in water through the following properties of water:
- Cohesion: This is the tendency of water molecules to stick to itself.
- Adhesion: This is the tendency of water molecules to stick to other molecules that are charged or polar.
Therefore, the cohesion and adhesion of water molecules contributes to the formation of meniscus.
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