Innermost Intercostal Muscles

Schematic of the chest wall musculature indicating the location of muscles. Inspiratory muscles including scalenes, external intercostals, parasternal intercostals and diaphragm are drawn on the left. Expiratory muscles are drawn on the right

Description

Origin

• Costal groove of superior rib

Insertion

• Superior border of rib below

Actions

• Assist in the function of both the external and internal intercostal muscles

Vascular Supply

• Anterior and Posterior Intercostal Arteries
• Internal Thoracic Arteries
• Musculophrenic Arteries
• Costocervical Trunk

Innervation

• Intercostal Nerves

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Clinical Significance

• Needs to be updated

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See Also

• Physical Exam Torso
• Torso Anatomy (Main)
• Chest Pain (Main)

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