part of part of Homo sapiens organ part fallopian tube reproductive structure ampulla of fallopian tube ampulla of uterine tube BTO:0004285 ampulla of uterine tube ampulla of the fallopian tube ampulla of oviduct uterine tube ampulla ampulla of fallopian tube ampulla tubae uterinae The ampulla is the second portion of the uterine tube. It is an intermediate dilated portion, which curves over the ovary. It is the most common site of human fertilization. The word ampulla is from the Latin for flask. Wikipedia:Ampulla_of_uterine_tube UBERON:0012648 FMA:18305 SCTID:245497001