Muscle | Origin | Insertion | Innervation | Action |
---|---|---|---|---|
Pectoralis major | Clavicle (medial half) Sternum Costal cartilages 1-6 Rectus sheath (anterior layer) |
Humerus (crest of greater tubercle) | Lateral pectoral n. Medial pectoral n. C5 - T1 |
Entire muscle: Adduction, IR Clavicular & Sternocostal parts: Flexion, Aids in respiration when shoulder is fixed |
Lower Subscapular nerve
Anatomy
There are 3 subscapular nerves:
- Superior Subscapular Nerve (C5, C6)1
- Middle Subscapular Nerve (Thoracodorsal) (C5, C6)1
- Lower supscaular nerve (C5, C6)1
All of these nerves originate from the posterior cord of the brachial plexus
Motor innervations
- Subscapularis
- Teres Major
References
1.
Dutton M. Dutton’s Orthopaedic Examination, Evaluation, and Intervention. 5th ed. McGraw Hill Education; 2020.
Citation
For attribution, please cite this work as:
Yomogida N, Kerstein C. Lower Subscapular
nerve. https://yomokerst.com/The
Archive/Anatomy/Nerves/Upper extremity
nerves/lower_subscapular_nerve.html