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23
what muscles cause flexion of the lumbar and thoracic joints?
bilateral action of: rectus abdominis
psoas major
gravity
lateral flexion: unilateral action of: iliocostalis thoracis and lumborum,
longissimus thoracis
multifidus
internal and external oblique
quadratus lumborum
rhomboids
serratur anterior
psoas major
gravity
lateral flexion: unilateral action of: iliocostalis thoracis and lumborum,
longissimus thoracis
multifidus
internal and external oblique
quadratus lumborum
rhomboids
serratur anterior