papillary muscle การใช้

• As the heart chambers contract, so do the papillary muscles.
• This has three cusps which are not attached to any papillary muscles.
• Rupture of a papillary muscle will cause acute mitral regurgitation.
• Rupture or dysfunction of the papillary muscle are also common causes in acute cases,
• The PDA supplies the inferior wall, ventricular septum, and the posteromedial papillary muscle.
• These cusps are also attached via chordae tendinae to two papillary muscles projecting from the ventricular wall.
• Prognosis is worse if a mechanical complication such as papillary muscle or myocardial free wall rupture occurs.
• The papillary muscles extend from the walls of the heart to valves by cartilaginous connections called chordae tendinae.
• The anterior and posterior papillary muscles of the left ventricle attach via chordae tendineae to the mitral valve.
• The semilunar aortic valve is at the base of the aorta and also is not attached to papillary muscles.
• This can lead to the subsequent displacement of the papillary muscles and the dilatation of the mitral valve annulus.
• The papillary muscles of both the right and left ventricles begin to contract shortly before ventricular systole and maintain tension throughout.
• Rupture of the papillary muscle may also lead to acute mitral regurgitation and subsequent pulmonary edema and possibly even cardiogenic shock.
• This shortcut across the chamber of the ventricle seems to facilitate conduction time, allowing coordinated contraction of the anterior papillary muscle.
• Unique to the parachute mitral valve is that the chordae insert on one papillary muscle, rather than two distinct papillary muscles.
• Unique to the parachute mitral valve is that the chordae insert on one papillary muscle, rather than two distinct papillary muscles.
• Ischemic heart disease causes MI by the combination of ischemic dysfunction of the papillary muscles, and the dilatation of the left ventricle.
• During the relaxation phase of the cardiac cycle, the papillary muscles are also relaxed and the tension on the chordae tendineae is slight.
• So by the action of papillary muscles on the atrioventricular valves, backflow of the blood from the ventricles into the atria is prevented.
• It arises from the lower part of the interventricular septum and crosses the interior space of the right ventricle to connect with the inferior papillary muscle.