Ibice bitatu byamazi yo guhagarika
Ibisobanuro ku bicuruzwa
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Ubwoko bwa vertebral ubwoko bwamazi yo guhagarika amazi ashobora kugabanywamo ibice bitatu: inkoni ebyiri zo hanze ninkoni imwe yimbere. Ifite imiterere yoroshye kandi ikoreshwa neza. Kandi inkoni yo hanze irashobora gukoreshwa nyuma yo kuyisenya. Mu iyubakwa rya nyuma, igice cyo hagati cyonyine kigomba kugurwa, gifite ibyiza byo kugabanya imyanda no kugabanya ibiciro; Kandi uzamure imikorere myiza nubwiza bwubwubatsi. Igice cyo hagati cyinkoni yimbere gisudwa nimpeta yo guhagarika amazi, kandi impande zombi zomekwa. Uburebure bw'inkoni y'imbere bugenwa ukurikije ubunini bwubatswe n'inkuta zoroshye. Muburyo bwo gukuraho impapuro, banza ukureho inkoni yinyuma ya screw, hanyuma ukureho impapuro. Urupapuro rufite igihombo cya zeru kandi ruzigama amafaranga nakazi