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Which muscle are in the deep layer of the anterior cervicular region?
- Longus Colli: Superior Oblique, Vertical Intermediate, Inferior Oblique
- Rectus Capitus Anterior
- Rectus Capitus Lateralis
- Also has the ALL
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ALL
- Narrow superiorly and broader inferiorly
- Extends from the anterior tubercle of C1 to pelvic surface of the upper sacrum
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Longus Colli 3 parts
- Superior Oblique
- Vertical Intermediate
- Inferior Oblique
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Superior Oblique
- O: Anterior tubercles of the xverse process of C3-C5
- I: Anterolateral surface of anterior tubercle of C1
- N: Anterior Rami of C2-C4
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Veritcal Intermediate
- O: Anterior aspect of bodies C5-T3
- I: Anterior aspect of the bodies of C2-C4
- N: Anterior Rami of C2- C6
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Inferior Oblique
- O: Anterior tubercles of xverse process of C5-C6
- I: Anterior aspect of bodies of T1-T3
- N: Anterior Rami of C5-C6
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Rectus Capitis Anterior
- O: Anterior surface of lateral mass oand root of transverse process of C1
- I: Inferior surface of the basilar part of the occipital bone
- N: Anterior rami of C1-C2
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Rectus Capitis Laterali
- O: Superior surface of xverse process of C1
- I: Inferior surface of the jugular process of the occipital bone
- N: Anterior rami of C1 and C2
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What are the anterior intermediate muscles?
- Scalenus Posterior
- Scalenus Medius
- Scalenus Anterior
- Longus Capitis
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Scalenus Posterior
- O: Posterior tubercles of xverse process of C4-C6
- I: Outer surface of 2nd rib behind the tubercle and attachment of serratus anterior
- N: Anterior Rami of C5-C7
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Scalenus Medius
- O: Xverse processes of C1 and C2 and anterior aspect of posterio tubercles of C3-C7
- I: Upper surface of 1st rib between the tubercle and groove for the subclavian artery
- N: Anterior Rami of C3-C8
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Scalenus Anterior
- O: Musculotendinous fasicles from the anterior tubercles of the transverse processes of C3-C6
- I: To scalene tubercle on the inner border of the 1st rib and ridge on the upper surface of the rib, anterior on the groove for the subclavian artery.
- N: Anterior Rami of C4-C6
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Longus Capitis
- O: anterior tubercles of xverse process of C3-C6
- I: Inferior surface of the basilar part of the occipital bone
- N: anterior Rami of C1 to C3
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Which muscles attach to the Hyoid?
- Supra hyoid: Mylohyoid, geniohyoid, stylohyoid and digastric.
- Infrahyoid: Sternohyiod, omohyoid, sternothyroid, thyrohyoid.
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SCM OINA
- Sternocleidomastoid
- O: Sternal head-Manubrium, Clavicular head- superior surface of medial third of clavicle
- I: Mastoid process of temporal bone and the superior nuchal line of the occipital bone.
- N: Spinal Accessory N
- A: Unilateral-tilts head to same side and rotates so face is turned superior towards opposite side. Bilaterally-Extends neck and O-C1, Flexes cervical vertebrea so chin approaches manubrium, Extends superior vertebrae so chin thrusts forward.
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Platysma
- Broad thin sheet of muscle in subcutaneous tissue of neck.
- Supplied by cervical branch of facial nerve (CN VII)
- Fibers arise from deep fascia covering superior parts of deltoid and pectoralis major muscles and sweep superomedially over the clavicle to the inferior boder of the mandible.
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A little more about the longus Colli:
What does it do?!
When about to move, the longis colli causes pretension in the neck to prepare it for movement. And works eccentricly to control movement.
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