LATISSIMUS
\lˈatɪsˌɪməs], \lˈatɪsˌɪməs], \l_ˈa_t_ɪ_s_ˌɪ_m_ə_s]\
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By Thomas Davidson
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Origin: Spines of 6 or 7 lower thoracic vertebrae, through lumbar fascia the spines of the lumbar and sacral vertebrae, crest of the ilium (outer lip), 3 or 4 lower ribs, often lower angle of scapula. Insertion: Bicipital groove of humerus. Nerve: Subscapularis longus. Action: Adducts, extends, and rotates arm inward.
By Alexander Duane