Uterine tube-four portions Q Uterine part- narrowest part, pierces uterine wall opens into cavity of uterus, about 1 cm long 9 lsthmus-straight narrow portion, thick walls, the place for tubal ligation(family planning) Q Ampulla- relatively wide, tortuous, 2/3 long thin walls fertilization place Infundibulum -lateral end-fimbriae, ovarian fimbria Fallopian pregnancy; oviductal pregnancyUterine tube-four portions Uterine part - narrowest part, pierces uterine wall & opens into cavity of uterus, about 1 cm long Isthmus - straight & narrow portion, thick walls, the place for tubal ligation (family planning) Ampulla - relatively wide, tortuous,2/3 long, thin walls; fertilization place Infundibulum - lateral end - fimbriae, ovarian fimbria Fallopian pregnancy; oviductal pregnancy