papillary muscle

The mitral valve is anchored to the heart muscle by small muscles called the papillary muscles.

The normal tricuspid valve usually has three leaflets and three papillary muscles.

They are connected to the papillary muscles by the chordae tendineae, which lie in the right ventricle.

U waves are thought to represent repolarization of the papillary muscles or Purkinje fibers.

The papillary muscles can be enlarged or atrophied.

Rupture of a papillary muscle will cause acute mitral regurgitation.

The chordae tendineae are attached to papillary muscles that cause tension to better hold the valve.

Together, the papillary muscles and the chordae tendineae are known as the subvalvular apparatus.

When the ventricles begin to contract, so do the papillary muscles in each ventricle.

There are five total papillary muscles in the heart, three in the right ventricle and two in the left.