intercostobrachial nerve

noun
in·​ter·​cos·​to·​bra·​chi·​al nerve | \ˌint-ər-ˌkäs-tō-ˌbrā-kē-əl- \

Medical Definition of intercostobrachial nerve 

: a branch of the second intercostal nerve that crosses the axilla and supplies the skin of the inner and back part of the upper half of the arm

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