1.Udonga lomzimba lukhombisa amapheshana emisipha.
2.Isimiso sokugaya ukudla sibonisa ukuvuleka, i-foregut, i-gastricum, i-midgut, i-posterior gut, i-anus, (ipayipi lokugaya elisuka ngaphambili ukuya emathunjini angemuva lingakhishwa) kanye nezindlala zamathe.
3.I-circulatory system ikhombisa imithambo yegazi emhlane kanye nenhliziyo.Isistimu yokuphefumula ibonisa isikhwama somoya kanye nenethiwekhi yamapayipi omoya.I-Excretory system Umsele we-Shemal.
I-4.Isimiso sezinzwa sibonisa ubuchopho, i-ventral nerve cord, i-ventral ganglion kanye negatsha le-nerve main.Uhlelo lokuzala lubonisa ama-ovari, imigqa emisiwe, amashubhu e-fallopian angemuva, (uhlangothi lwesobunxele lungakhishwa) amashubhu e-fallopian aphakathi, ama-seminal vesicles, i-vagin, ne-foramina yesitho sangasese.