Transversus thoracis muscle

Transversus Thoracis Muscle

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Transversus thoracis muscle

The Transversus Thoracis Muscle is a thin, flat muscle located in the anterior wall of the human thorax. It is also known as the sternocostalis or triangularis sterni muscle.

Anatomy

The Transversus Thoracis Muscle originates from the lower third of the posterior surface of the body of the sternum, the posterior surface of the xiphoid process, and the sternal ends of the costal cartilages of the lower three or four true ribs. It inserts into the internal surface of costal cartilages 2-6.

Function

The primary function of the Transversus Thoracis Muscle is to depress the ribs, aiding in exhalation during respiration.

Clinical Significance

Abnormalities or injuries to the Transversus Thoracis Muscle can lead to respiratory issues, as it plays a crucial role in the mechanics of breathing.

See Also

• Thorax
• Muscles of the human body
• Respiratory system