Heart valve facts for kids

Quick facts for kids Heart valves

Valves of the heart in motion, the front wall of the heart is removed in this image.
System	Cardiovascular

A heart valve normally allows blood to flow in only one direction through the heart.

The four valves are commonly represented in a mammalian heart that determines the pathway of blood flow through the heart.

A heart valve opens or closes incumbent on differential blood pressure on each side.

Images for kids

Blood flow through the valves
3D - loop of a heart viewed from the apex, with the apical part of the ventricles removed and the mitral valve clearly visible. Due to missing data, the leaflets of the tricuspid and aortic valves are not clearly visible, but the openings are; the pulmonary valve is not visible. On the left are two standard 2D views (taken from the 3D dataset) showing tricuspid and mitral valves (above) and aortal valve (below).
This is further explanation of the echocardiogram above. MV: Mitral valve, TV: Tricuspid valve, AV: Aortic valve, Septum: Interventricular septum. Continuous lines demarcate septum and free wall seen in echocardiogram, dotted line is a suggestion of where the free wall of the right ventricle should be. The red line represents where the upper left loop in the echocardiogram transects the 3D-loop, the blue line represents the lower loop.
Illustration of the valves of the heart when the ventricles are contracting.