Pectoralis major
Musculus pectoralis major
A large, fan-shaped muscle of the anterior chest wall. It has clavicular and sternocostal heads originating from the clavicle, sternum, and upper costal cartilages. The fibers converge to insert on the lateral lip of the intertubercular sulcus of the humerus.
| 类型 | Muscle |
| 身体系统 | Muscular |
| 身体区域 | Thorax |
| 上级结构 | muscle of shoulder |
| 拉丁名称 | Musculus pectoralis major |
| FMA ID | 9627 |
功能
A powerful adductor, flexor, and medial rotator of the arm at the shoulder. Essential for pushing movements, climbing, and arm-swinging activities.
临床意义
Pectoralis major rupture occurs during heavy bench pressing. Poland syndrome involves congenital absence of the pectoralis major. The muscle is used in pectoralis major flap reconstructive surgery.
常见问题
What is the Pectoralis major?
A large, fan-shaped muscle of the anterior chest wall. It has clavicular and sternocostal heads originating from the clavicle, sternum, and upper costal cartilages. The fibers converge to insert on the lateral lip of the intertubercular sulcus of the humerus.
What is the function of the Pectoralis major?
A powerful adductor, flexor, and medial rotator of the arm at the shoulder. Essential for pushing movements, climbing, and arm-swinging activities.
What body system is the Pectoralis major part of?
The Pectoralis major is part of the Muscular.
What conditions affect the Pectoralis major?
Pectoralis major rupture occurs during heavy bench pressing. Poland syndrome involves congenital absence of the pectoralis major. The muscle is used in pectoralis major flap reconstructive surgery.
Where is the Pectoralis major located?
The Pectoralis major is located in the Thorax region of the body.
相关结构
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