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Subcostal
Other Terms:
Subcostalis,
Musculus subcostalis
Muscle parts
None
Latin name
Musculi subcostales
Latin muscle parts
None
Group
Thoracic wall – lateral musculature – internal layer
Etymology
The English name for this muscle is the muscle under the rib. The word subcostal comes from the Latin terms sub meaning “under” and costa meaning “rib.”
Origin
Internal surface of rib near neck
Insertion
Internal surface of rib near angle two or three ribs superior to the origin
Action
Depress the ribs.
Nerve supply
Intercostal nerves (T1 through T11)
Blood supply
Superior intercostal artery from the costocervical trunk of the subclavian artery. Posterior intercostal arteries from the aorta.
Latin
Musculus subcostalis
