Heart and Circulatory System

Script: Nga bu 'cell' bwo musaayi bwebweyoleka mu kasawo kenjuba oba 'yolk sac,' ne obuseke bwo musaayi, nabwo bukula okubuna 'embryo' yona, era no'mutima omwagagauo nagwo guba gutuze.

Kumpi mukisera kyekimu, omutima ogubagukula amangu gwe yumba-ko era ebisenge ebyawufu bitandi okweyoleka oba okwe zimba.

Omutima gutandi okukuba mu wiiki satu no'lunaki nga okuwaka 'fertilization' kuwede.

Otambula kwo musayi kwekusooka okutandiika okukola, oba ebitundu byo mubiri ebi kwata gaa no'musaayi, kino eberewo'kudukana kwomubiri kusobole kuberawo.