Many anatomical features of the adult testis reflect its developmental origin in the abdomen. The layers of tissue enclosing each testicle are derived from the layers of the anterior abdominal wall. The cremasteric muscle arises from the internal oblique muscle.
mAny ANatomicaL featuREs Of tHe AduLt teStIS ReFLecT its develOPMEntal origin in thE abDOMEn. The layers Of Tissue eNclosiNg EAcH TeSTicle aRe deRIveD frOm tHe layErS Of The anTErior abDOminal wALl. ThE cReMAsTeriC MusCLE arisEs from tHe interNal ObliQUe musCLe.