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Serratus posterior inferior
/sˈɛɹatəs pɒstˈiəɹɪəɹ ɪnfˈiəɹɪə/
/sˈɛɹæɾəs pɑːstˈiəɹɪɚɹ ɪnfˈiəɹɪɚ/Serratus posterior inferior
01
a thin quadrilateral muscle at the junction of the thoracic and lumbar regions; acts to counteract the pull of the diaphragm on the ribs to which it is attached
