pectoral nerve

noun

Medical Definition of pectoral nerve

: either of two nerves that arise from the brachial plexus on each side or from the nerve trunks forming it and that supply the pectoral muscles:
a : one lateral to the axillary artery

called also lateral pectoral nerve, superior pectoral nerve

b : one medial to the axillary artery

called also inferior pectoral nerve, medial pectoral nerve

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