Medial pectoral nerve

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Nerve: Medial pectoral nerve
Nerves of the left upper extremity. (Medial anterior thoracicvisible in upper right.)
Latin n. pectoralis medialis
Gray's subject #210 933
Innervates pectoralis minor
From medial cord
Dorlands/Elsevier n_05/12566420

The medial pectoral nerve (medial anterior thoracic) arises from the medial cord of the plexus and through it from the eighth cervical and first thoracic.

It passes behind the first part of the axillary artery, curves forward between the axillary artery and vein, and unites in front of the artery with a filament from the lateral nerve.

It then enters the deep surface of the Pectoralis minor, where it divides into a number of branches, which supply the muscle.

Two or three branches pierce the muscle and end in the Pectoralis major.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

Brachial plexus

supraclavicular: dorsal scapular - suprascapular - to the subclavius - long thoracic

infraclavicular: lateral cord: musculocutaneous (lateral cutaneous of forearm) - lateral pectoral - lateral head of median

medial cord: medial pectoral - medial cutaneous of forearm - medial cutaneous cutaneous of arm - ulnar (palmar branch - dorsal branch) - medial head of median

posterior cord: upper subscapular - lower subscapular - thoracodorsal - axillary (superior lateral cutaneous of arm) - radial (muscular - posterior cutaneous of arm - posterior cutaneous of forearm - superficial branch - deep branch)

median: anterior interosseous - palmar - proper palmar digital - common palmar digital

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