Transversus Thoracis

Description

Illustration of Transversus Thoracis

Name

• Transversus Thoracis
• Triangularis sterni
• Sternocostalis muscle

General

• Thin flat muscle located on the inner surface of the anterior thoracic wall
• Places a role in forced expiration by depressing the ribs
• Considered one of the accessory muscles of respiration

Origin

• Xiphoid Process (posterior aspect)
• Sternum

Insertion

• Ribs 2-6

Actions

• Expiration (Depresses ribs caudally)

Vascular Supply

• Anterior Intercostal Arteries

Innervation

• Intercostal Nerves

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Clinical Significance

• Needs to be updated

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See Also

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

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