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cardiac muscle. a type of cardiac muscle is the papillary muscles attach to the lower portion of the interior wall of the ventricles. They connect to the chordae tendineae, which attach to the tricuspid valve in the right ventricle and the mitral valve in the left ventricle. The contraction of the papillary muscles opens these valves. When the papillary muscles relax, the valves close.

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13y ago
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11y ago

The name of the muscle that is in your heart is called the Cardiac muscle. Trust me I am a 5th grader :)

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Q: What is the significant name for heart muscle?
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