Lateral pectoral nerve

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The lateral pectoral nerve is a branch of the lateral cord of the brachial plexus.

Lateral pectoral nerve

System:
Function:
Origin: Lateral cord of the brachial plexus
Branches:
Insertion:
Arterial supply:
Venous drainage:
Lymphatic drainage:
Innervation: Pectoralis major, pectoralis minor, shoulder, acromioclavicular joint
Vertebral levels: C5 nerve root, C6 nerve root, C7 nerve root
Search for Lateral pectoral nerve in Gray's.


Contents

Roots

Anatomical Course

The nerve originates from the lateral cord of the brachial plexus. It crosses the axillary artery and vein anteriorly to continue through the clavipectoral fascia, supplying the posterior surface of pectoralis major. It then sends a ramus to the medial pectoral nerve to supply pectoralis minor.

Motor Supply

Sensory Supply

Variations

May arise from the anterior divisions of the upper and middle trunks of the brachial plexus, rather than the lateral cord.

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