- is the contractile unit of the myocardial cell.
- is similar to the contractile unit in skeletal muscle.
- contains thick filaments (myosin) and thin filaments (actin, troponin, tropomyosin).
- As in skeletal muscle, shortening occurs according to a sliding filament model, which states that thin filaments slide along adjacent thick filaments by forming and breaking cross-bridges between actin and myosin.
Was this article helpful?