Medial Pectoral Nerve

The medial pectoral nerve (medial anterior thoracic) arises from the medial cord of the brachial 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. A mnemonic to differentiate the medial pectoral nerve, which pierces both pectorals, from the lateral pectoral nerve, which pierces only Pectoralis major, is "Lateral Less, Medial More".

Other articles related to "medial pectoral nerve, pectoral nerve, nerve, medial":

Pectoralis Major Muscle - Innervation
... The pectoralis major receives dual motor innervation by the medial pectoral nerve and the lateral pectoral nerve, also known as the lateral anterior thoracic nerve ... of innervation of the pectoralis major originates in the C7, C8 and T1 nerve roots which merge to form the lower trunk of the brachial plexus ... in the anterior division of the lower trunk, become the medial cord, and exit the medial cord as the medial pectoral nerve ...

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