muscles

Created by: michaela
Created on: 28-10-17 18:13

liocostalis: Lumborum.

Origin- Illiac crest and tuberosity sacrum and spinous processes of LX vertbrea. Insertion- Inf border of lower 6 ribs. Orientation- Fibres run up and out vai slips Action- unilat- allowes for side flex and rotation. ( ipsilateral)

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Longissimus: Thoracics.

Origin: T.Ps of all lx vertebrae and adjacent fasica Insertion: Lower 10 Ribs and Tp’s of all TX vertebrae. Orientation- fibres run up and out ( not as much angulation as iliocostalis) Action- unilat- allowes for side flex and rotation. ( ipsi

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Spinalis: Thoracics.

Origin: Sp’s of T11-L2 Insertion: Sp’s above t1-t6 Orientation- fibres run up to sp’s Action- unilat- allowes for side flex and rotation. ( ipsilateral) Bilat- Extension of the back from a prone postion ( or lying) Nerve: adjac

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SemiSpinalis: Thoracics.

Origin: Tp’s of the lower thoracic Vertebrea (T6-T10) Inseertion- 4-6 levels above Orientation- Fibres run up and into. Action- unilat- contralat rotation Bilat- trunk extension from a lying position. Stabilisation Nerve: Adjace

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Multifidus.

Origin: Attaches from sacral fascia and Tp’s of LX Inseertion- Sp’s of vertbrea 1-5 levels above Orientation- Fibres run up and into. Action- unilat- contralat rotation Bilat- trunk extension from a lying position. Stabilisation

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ROTATORS

Origin: Attaches from Tp’s in LX Insertion: Into laminea of vertbrea 1-2 levels above. Action- unilat- contralat rotation Bilat- trunk extension from a lying position. Stabilisation Nerve: Adjacent post primary rami. ( correspond

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Longissimus: Thoracics.

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muscles