Inka ziri mu nyamaswa zikoreshwa cyane mu buhinzi bw’inganda, zikorerwa ibikorwa bishyira imbere umusaruro kuruta imibereho myiza. Inka z’amata, nkurugero, zihatirwa kuzunguruka zidahwema gutera akabariro no gukuramo amata, bihanganira ibibazo byinshi kumubiri no mumarangamutima. Inyana zitandukanijwe na ba nyina nyuma gato yo kuvuka - igikorwa gitera umubabaro mwinshi kuri bombi - mu gihe inyana z’abagabo akenshi zoherezwa mu nganda z’inyamanswa, aho zihura n’ubuzima bugufi, bufunzwe mbere yo kubagwa.
Inka z'inka, zihanganira inzira zibabaza nko kuranga, gutesha agaciro, no guta, akenshi nta anesteya. Ubuzima bwabo bwaranzwe no kugaburira abantu benshi, ibihe bidahagije, hamwe no gutwara abantu babagana ibagiro. Nubwo ari abanyabwenge, ibinyabuzima bifite ubushobozi bwo gushiraho ubumwe bukomeye, inka zigabanywa kubice byumusaruro muri sisitemu ihakana ubwisanzure bwibanze.
Usibye impungenge zishingiye ku myitwarire, ubworozi bw'inka nabwo buteza ingaruka mbi ku bidukikije - bigira uruhare runini mu byuka bihumanya ikirere, gutema amashyamba, no gukoresha amazi adashoboka. Iki cyiciro gitanga urumuri rwihishwa rwinka, inka z’amata, n’inyana z’inyana, n’ingaruka nini z’ibidukikije ziterwa no kuzikoresha. Mugusuzuma ibi bintu, biraduhamagarira kwibaza imikorere isanzwe no gushaka ubundi buryo bwimpuhwe, burambye bwo gutanga umusaruro.
Amamiriyoni y'inka yihanganira imibabaro myinshi mu nganda z’inyama n’amata, ibibazo byabo ahanini bikaba bitagaragara mu bantu. Kuva aho abantu buzuye, buzuye amakamyo atwara abantu kugeza ibihe byanyuma biteye ubwoba mu ibagiro, izo nyamaswa zumva zihura n’uburangare n’ubugome bidasubirwaho. Yanze ibikenerwa byibanze nkibiryo, amazi, nuburuhukiro mugihe cyurugendo rurerure mugihe cyikirere gikabije, benshi bahitanwa numunaniro cyangwa ibikomere mbere yuko bagera aho berekeza. Mu ibagiro, ibikorwa biterwa ninyungu akenshi bituma inyamaswa ziguma zifite ubwenge mugihe cyubugome. Iyi ngingo iragaragaza ihohoterwa rishingiye ku nganda ryashinze imizi muri izo nganda mu gihe riharanira ko abantu barushaho kumenyekana no guhindura amahitamo ashingiye ku bimera nk'inzira y'impuhwe zitera imbere










