Kalmar "musculus pectoralis small" tana nufin wata tsoka a yankin ƙirjin jiki. Karamar tsoka ce mai sifar triangular wacce ke ƙarƙashin babbar tsokar pectoralis. Kalmar "musculus" tana nufin "tsokoki" a harshen Latin, "pectoralis" yana nufin ƙirji ko ƙirjin, kuma "ƙanami" yana nufin ƙarami ko ƙarami. Saboda haka, ƙananan ƙwayoyin tsoka za a iya fassara a matsayin "ƙaramin tsokar ƙirji." Babban aikin wannan tsoka shine don daidaita scapula (fadar kafadu) da kuma taimakawa a motsi na haɗin gwiwa na kafada.