Answer:
clavicular, sternocostal.
Explanation:
Pectoralis major muscle is one of the largest muscle present in the upper chest of the body. This muscle fans across the chest that foram from the shoulder to the breast bone.
The pectoralis major muscle has been divided into two main groups. The superior muscle also known as clavicular that articulates with the sternum. The inferior muscle also known as sternocoastal muscle that can articulate with the synovial plane.
Thus, the correct answer is option (1).
