Caudal dorsal serrate muscle - Musculus serratus dorsalis caudalis

Anatomical hierarchy

General terms > Myology > Muscles of back > Caudal dorsal serrate muscle



The caudal dorsal serrate muscle (Serratus dorsalis caudali) is a muscle that originate from the thoracolumbar fascia caudally and attach by a series of individual digitations to the ribs lateral of the iliocostal muscles. .

Origin: Thoracolumbar fascia.

Insertion: Caudal border of the eleventh, twelfth and thirteenth ribs.

Action: Draws the last three or four ribs caudally for expiration

Nerve: Intercostalis.


Note : the caudal dorsal serrate muscle (Serratus dorsalis caudali) is sometimes described as the caudal part of the "dorsal serrate muscle": this muscle is not termed in the Vth NAV because is an epaxial muscle that is completely divided into cranial and caudal parts with different innervation and function.

Text by Antoine Micheau, MD - Copyright IMAIOS


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