PECM
Pectoralis Major — Clavicular Head
Short definition
Clavicular head of the pectoralis major.
Full definition
PECM is the upper (clavicular) head of the pectoralis major, driving horizontal flexion and adduction of the arm and engaged in incline presses, peaking at 30–45° incline.
Examples
A 30° incline press emphasises PECM.