spinocostalis

spi·no·cos·ta·lis

(spī'nō-kos-tā'lis), The superior and inferior serratus posterior muscles regarded as one. [L.]

spinocostalis

S14-882460 (spī″nō-kŏs-tā′lĭs) [″ + costa, rib] The combination of the superior and inferior serratus muscles.