The subcostales (singular: subcostalis) (Infracostales) consist of muscular and aponeurotic fasciculi, which are usually well-developed only in the lower part of the thorax; each originates from the inner surface of one rib, and is inserted into the inner surface of the second or third rib below, near its angle.
| Subcostalis muscle | |
|---|---|
| Details | |
| Origin | Inner surface of one rib |
| Insertion | Inner surface of the second or third rib below, near its angle |
| Nerve | Intercostal nerves |
| Actions | Depress ribs |
| Identifiers | |
| Latin | musculus subcostalis |
| TA98 | A04.4.01.015 |
| TA2 | 2314 |
| FMA | 71315 |
| Anatomical terms of muscle | |
Their fibers run in the same direction as those of the intercostales interni.
Depresses the ribs to assist in expiration.
References
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This article incorporates text in the public domain from page 403 of the 20th edition of Gray's Anatomy (1918)
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