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Musculophrenic Artery
Cardiovascular System

Musculophrenic Artery

Arteria musculophrenica

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The musculophrenic artery is one of the two terminal branches of the internal thoracic artery, the other being the superior epigastric artery.


The musculophrenic artery originates at the level of the sixth intercostal space. It passes inferolaterally, behind the seventh, eighth, and ninth costal cartilages, traverses the diaphragm to end near the last intercostal space.


As the musculophrenic artery it passes the seventh, eighth and ninth intercostal spaces, it gives off arterial branches corresponding to the anterior intercostal arteries of the upper intercostal spaces.

Supplied Structures

The musculophrenic artery supplies the muscles of the intercostal space, abdominal wall, diaphragm, and lower part of the pericardium.

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Arteries are vessels transporting blood between heart, tissues, and other organs in order to supply them with nutrition and oxygen.

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