what muscle attach to the chordae tendineae to hold the valves in place
Chordae tendineae The chordae tendineae (tendinous cords), colloquially known as the heart strings, are tendon-resembling fibrous cords connective tissue that connect the papillary muscles to the tricuspid valve and the bicuspid valve in the heart.
Marcus Álvarez
Cerebrum With the assistance of the cerebellum, the cerebrum controls all voluntary actions in the body.
Cardiac physiology It is not very well known how the electric signal moves in the atria. It seems that it moves in a radial way, but Bachmann's bundle and coronary sinus muscle play a role in conduction between the two atria, which have a nearly simultaneous systole.[5][6][7] While in the ventricles, the signal is carried by specialized tissue called the Purkinje fibers which then transmit the electric charge to the myocardium.[8]