Intrinsic back muscles (deep back muscles):

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Presentation transcript:

Intrinsic back muscles (deep back muscles): act on the vertebral column maintain posture

DPR

extrinsic back muscles Superficial layer of extrinsic back muscles

extrinsic back muscles Erector Spinae: intermediate layer of extrinsic back muscles

Spinalis: capitis cervicis thoracis

Longissimus: capitis cervicis thoracis

Iliocostalis: cervicis thoracis lumborum

Deep layer of intrinsic back muscles: Transversospinal muscle group Semispinalis Mulitifidus Rotatores

ipsilateral rotators contralateral rotators

deep neck muscles that, acting bilaterally, extend the neck: 1 – semispinalis cervicis and iliocostalis 5 – longissimus capitis 2 – splenius cervicis and levator scapulae 6 – semispinalis capitis 3 – splenius capitis 7 - trapezius 4 – multifidus

Minor deep layer of intrinsic back muscles:

Suboccipital Region:

Supoccipital triangle boundaries: superomedial Rectus Capitis Posterior Major superolateral Superior Oblique inferolateral Inferior Oblique

suboccipital triangle floor and contents and suboccipital n.