Article overview heart valves
- What are the heart valves?
- What is the function of the heart valves?
- Where are the heart valves?
- What problems can the heart valves cause?
What are the heart valves?
The four heart valves are formed by the heart endocardium (endocardium). Depending on their construction, there are two types of heart valves: sail flaps and pocket flaps.How does one faint? If you suddenly fall over, it scares you. What is behind it and when do you really have to worry about it? If you suddenly fall over, it scares you. What is behind it and when do you really have to worry?
The two leaflets (atrioventricular valves, AV valves) are located at the atrium-chamber border. In the left heart this is the bicuspid valve (also mitral valve) with two delicate sails, and in the right heart the tricuspid valve with three sails. On the free edges of the sails tendons start, which emanate from the Papillarmuskeln (small protuberances of the chamber inner wall). The tendon threads prevent the free edges of the leaflets from bouncing back into the atria during contraction of the ventricle (systole). Instead, they lie tightly together and close the opening to the forecourt.