The pulmonary valve is one of the four valves of the heart and is located between the large pulmonary artery (Pulmonary trunk) and the right main chamber. The pulmonary valve is a pocket valve and usually consists of a total of 3 pocket valves.
This includes:
The pockets have an indentation that fill with blood when the aortic valve is closed. They also all have a small fiber knot that meet when the valve closes. The valve is formed in the fetus in the 5th to 7th week of embryonic development.
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$config[ads_text2] not foundThe pulmonary valve prevents the blood from flowing back into the right ventricle from the pulmonary artery, which carries deoxygenated blood to the lungs. If that heart As the heart contracts, blood is drawn from the right main chamber by pressure into the large pulmonary artery (Pulmonary trunk) and thus into the lungwhere it is enriched with oxygen. For this to work, the pulmonary valve must open.
Then the heart has to relax again in order to fill up with blood again, if the pulmonary valve did not exist, the pumped blood would flow back. This is why the pulmonary valve closes during this phase, preventing reflux. If the closure of the pulmonary valve no longer works, one speaks of a Pulmonary valve regurgitationSo the blood flows back into the heart. The opposite of that is that Pulmonary valve stenosis, opens the Heart valve too little and it is difficult for the blood to flow from the heart into the pulmonary circulation.
Both diseases lead to an overload of the heart, since more force has to be expended to achieve the same discharge as with a healthy valve.