How is the structure of a skeletal muscle related to its function?

Muscle cells are long and spindly. The cells have an incredible organization inside of two proteins, actin and myosin. When Ca+'s are released, a couple of substances that keep the actin and myosin separated break down and the actin and myosin combine and spontaneously contract. As the actin and myosin is also attached to connective tissue and the connective tissue keeps coming together to ultimately form a tendon, with the actin and myosin contracting at the cellular level the muscle, as a whole also contracts which pulls on the tendon which pulls on the bone.