Posterior Scalene

Description

Illustration of posterior scalene

Illustration of the anterior, middle and posterior scalen

Name

• Posterior Scalene
• Scalenus Posterior Muscle

General

• The posterior scalene is one of the Scalene Muscles of the Neck
• It contributes to movement of the neck and acts as an accessory muscle of respiration

Origin

• Posterior tubercle of transverse process of vertebrae C4-C7

Insertion

• Anterolateral surface of 2nd rib

Actions

• Elevation of 2nd rib (Accessory muscle of inspiration)
• Bilateral: Flexion of cervical spine
• Unilateral: Sidebending and rotation of cervical spine to same side

Vascular Supply

• Ascending Cervical Artery (Muscular branches)
• Superficial Cervical Artery

Innervation

• Anterior rami of cervical spinal nerves C6-C8

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Clinical Significance

• Needs to be updated

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See Also

• Physical Exam Neck
• Neck Anatomy (Main)
• Neck Pain (Main)

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