Archive for December, 2006

Muscle of the Month (November): Pectoralis Major

Posted on December 8th, 2006, by relax

The pectoralis major or ‘pecs’ is a large, flat, square muscle on each side of the upper chest, tapering toward the upper shoulder.  The clavicular, or upper fibers of the pectoralis major are effective in flexing the shoulder joint, while the sternal/abdominal fibers extend the flexed joint.  Both serve as powerful lifters and are important in the [...]

Tags: , , , , , , , , , , , ,