Cardiac myocytes are primarily mechanical pumping cells with strong cytoskeletal elements and potentially less lipid content than brain cells.

“in contrast a cardiac myocyte outside of it's being regulated by the foci that regulates heartbeats in the atria and so forth the av node and other areas the cardiac myocyte is simply a mechanical cell that has to pump all the time to be able to maintain a certain pressure and blood flow so that environment by itself requires strong cytoskeletal elements such as actin or myosin that are efficiently packaged for pumping and may require less lipids than the wiring that we discussed in the brain”