Musculature of Chest (Left) (Musculi thoracis sinister)
Educational content only — not medical advice.
Anatomy
The musculature of the left chest encompasses the stratified musculoaponeurotic layers of the anterior and lateral thoracic wall, including the pectoralis major, pectoralis minor, and subclavius. It provides dynamic pectoral girdle mobility, anchors the upper limb to the axial skeleton, and protects the anterior left thoracic cage and lung.
Clinical notes
Poland syndrome is congenital unilateral hypoplasia or absence of the pectoralis major sternocostal head; the pectoral fascial plane is a fundamental surgical space in subpectoral breast reconstruction and pacemaker implantation.
Related structures
Educational references
FAQ
What is the role of the Musculature of Chest (Left)?
The musculature of the left chest encompasses the stratified musculoaponeurotic layers of the anterior and lateral thoracic wall, including the pectoralis major, pectoralis minor, and subclavius. It provides dynamic pectoral girdle mobility, anchors the upper limb to the axial skeleton, and protects the anterior left thoracic cage and lung.
Why is the Musculature of Chest (Left) clinically important?
Poland syndrome is congenital unilateral hypoplasia or absence of the pectoralis major sternocostal head; the pectoral fascial plane is a fundamental surgical space in subpectoral breast reconstruction and pacemaker implantation.
Source & license
BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/). license details