MULTIFIDUS
\mˌʌltɪfˈɪdəs], \mˌʌltɪfˈɪdəs], \m_ˌʌ_l_t_ɪ_f_ˈɪ_d_ə_s]\
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Origin: By a series of fasciculi from back of sacrum, posterior superior spine of ilium, and posterior sacro-iliac ligaments, articular processes of lumbar and cervical vertebrae, transverse processes of thoracic vertebrae. Insertion: Laminae and spinous processes of vertebrae (one fasciculus to each vertebrae). Nerve: Internal posterior branches of sacral, lumbar, and thoracic nerves. Action: Keeps spine erect; rotates spine.
By Alexander Duane
