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.
|Origin||inner surface of one rib|
|Insertion||inner surface of the second or third rib below, near its angle|
|Anatomical terms of muscle|
Their fibers run in the same direction as those of the Intercostales interni.
Elevates the ribs to assist in inspiration.