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Vertebral muscles


What does the suboccipital contents? vertebral artery and suboccipital nerve
I am the inferolateral border of the suboccipital triangle. obliquus capitis inferior
I am the superolateral border of the suboccipital triangle. obliquus capitis superior
I am the superomedial border of the suboccipital triangle. rectus capitis posterior major
Levator Costarum has longus and brevis elevates ribs, assist in inspiration, assist with side bending of vertebral column
Intertransversarii innervated by dorsal and ventral rami unilateral-aid in column side bending bilateral-stabilize column
Interspinales aid in extension and rotation of vertebral column
6th layer-deep minor intrinsic group interspinalis, intertransversarii, levator costorum
Rotatores has longus and brevis stabilize vertebrae and assist with local extension and rotary movts of vertebral column
Multifidus stabilize vertebrae during local movt of vertebral column
Semispinalis thoracic, cervicis, and capitis extends head, thoracic, and cervical regions of vertebral column, rotates them conralaterally
5th layer-deep intrinsic group (deep transversospinalis) Rotatores, Multifidus, and Semispinalis
Iliocostalis, Longimissus, and Spinalis unilateral- side bend vertebral column bilateral- extends vertebral column and head, as back is flexed they control movt by gradually lengthening fibers
4th layer-intrinsic intermediate layer Iliocostalis, Longimissus, and Spinalis
3rd layer-intrinsic superficial layer splenius capitis and cervicis
Splenius Capitis and Cervicis unilateral- side bend and rotate head to same side bilateral-extends head and neck
Thoracolumber Fascia provides passive resistance to trunk extension
Serratus Posterior Inferior innervated by ventral rami of spinal nerve depresses ribs
Serratus Posterior Superior innervated by intercostal nerve elevates ribs
Serratus Anterior innervated by long thoracic nerve protracts scapula and holds it against thoracic wall, rotates scapula
lumborum, thoracic, and cervicis regions Iliocostalis
thoracic, cervicis and capitis regions longissimus, semispinalis,and spinalis
1st layer-superficial extrinsic Trapezius, Latissimus Dorsi, Levator Scapulae, Rhomboid Major and Minor
Trapezius, Latissimus Dorsi, Levator Scapulae, Rhomboid Major and Minor connects upper extremity to trunk and contral upper extremity movements
Trapezius innervated by spinal accessory nerve XI elevates, retracts, and rotates scapula
Levator Scapulae innervated by dorsal scapular elevates scapula and tilts glenoid cavity inferiorly
Latissumus Dorsi innervated by thoracodorsal extends, adducts, and IR humerus, raises body toward arms during climbing
rhomboid major and minor innervated by dorsal scapular retracts scapula and rotate it to depress gleniod cavity
Innervated by dorsal rami of spinal nerve Splenius, Iliocostalis, Longimissus, Spinalis, longissimus, semispinalis, interspinalis, levator costorum
Innervated by suboccipital nerve Rectus Capitis Posterior Minor and Major Obliquus Capitis Superior and Inferior
2nd layer-intermediate extrinsic group (Superficial respiratory muscles ) Serratus Anterior, Serratus Posterior Superior and Serratus Posterior Inferior
Created by: apage



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