The pecs are found attached to the humerus of the arm, right near where the shoulder joint is. The pecs then run across the front of the body and originate on the breastbone. The pectoralis major is attached to the front of the body on the rib cage. The pectoralis minor is found underneath the pectoralis major. It originates on the ribs and attaches up to the scapula, specifically at the coracoid process.
Major Mass Building Exercises:
Flat, Incline, Decline Barbell Bench Press
Flat, Incline, Decline Dumbbell Bench Press
Flat, Incline, Decline Chest Flys
Cable Crossover
Close Grip Bench Press
Pullovers