Relacionar Columnas Principle muscle of trunkVersión en línea Match por Kristie Borgheiinck 1 External abdominal oblique 2 Sacrospinalis 3 Levator ani 4 Diaphragm 5 Perineum 6 Internal and External Intercostals extends vertebral column to produce erect posture (long and thick below the trapezium and latissimus) aids defecation, support the pelvic viscera (posterior from tip of the coccyx to the anal canal) elevate ribs and enlarge thoracic cavity attached to a fill the spaces between the ribs (lie at angles in opposite directions to each other) Compresses abdominal cavity, expel substances from body, and flex spinal column. dome forms the partition between the thoracic cavity and abdominal cavity below (moves down with inhalation) floor of pelvis, provides support (horizontal lie near genitalia)
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