ch_11_part2 - 11-5 Axial MusculatureMuscles of the...

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Unformatted text preview: 11-5 Axial MusculatureMuscles of the Vertebral ColumnSpinal extensors or erector spinae muscles (superficial and deep)Spinal flexors (transversospinalis) 11-5 Axial MusculatureMuscles of the Vertebral Column Deep Spinal ExtensorsSemispinalis groupMultifidus muscleInterspinalis musclesIntertransversarii musclesRotatores musclesFigure 11-10 Muscles of the Vertebral ColumnErector Spinae,Deep LayerSemispinalis GroupSemispinalis capitisSemispinalis cervicisSemispinalis thoracisMultifidusErector Spinae,Superficial LayerSplenius capitisSpinalis, Longissimus, and Iliocostalis GroupLongissimus capitisSpinalis cervicisLongissimus cervicisIliocostalis cervicisIliocostalis thoracisLongissimus thoracisSpinalis thoracisIliocostalis lumborumTable 11-8 Muscles of the Vertebral Column (Figure 1110)11-5 Axial MusculatureMuscles of the Vertebral Column Superficial Spinal ExtensorsSpinalis groupLongissimus groupIliocostalisgroup11-5 Axial MusculatureMuscles of the Vertebral Column Spinal FlexorsNeckLongus capitis and longus colli Rotate and flex the neckLumbarQuadratus lumborum muscles Flex spine and depress ribsFigure 11-10 Muscles of the Vertebral ColumnIntervertebral Muscles,Posterior ViewRotatoresIntertransversariiSpinousprocessofvertebraTransverseprocess ofvertebraInterspinalesPosterior viewSpinal FlexorsQuadratus lumborumFlexors of the AnteriorCervical and ThoracicSpineThoracodorsalfasciaLonguscapitisLonguscolliErector Spinae,Deep LayerTable 11-8 Muscles of the Vertebral Column (Figure 1110)11-5 Axial MusculatureOblique and Rectus MusclesLie within the body wallOblique musclesCompress underlying structuresRotate vertebral columnRectus musclesFlex vertebral columnOppose erector spinae11-5 Axial MusculatureOblique Muscles Cervical regionScalenemusclesFlex the neckThoracic regionIntercostalmuscles (external and internal)Respiratory movements of ribsTransversus thoracisCross inner surface of ribs11-5 Axial MusculatureOblique Muscles Abdominopelvic region (same pattern as thoracic)External oblique muscles Internal oblique musclesTransversus abdominis11-5 Axial MusculatureRectus Muscles Rectus abdominisBetween xiphoid process and pubic symphysisDivided longitudinally by linea albaDivided transversely by tendinous inscriptions11-5 Axial MusculatureRectus Muscles Diaphragmatic muscle or diaphragmDivides thoracic and abdominal cavitiesPerforms respirationFigure 11-11a Oblique and Rectus Muscles and the DiaphragmScalenesAnteriorMiddlePosteriorAnterior view,cervical regionFigure 11-11b Oblique and Rectus Muscles and the Diaphragm...
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ch_11_part2 - 11-5 Axial MusculatureMuscles of the...

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