At high magnification, the appearance of tall columnar epithelium of the normal fallopian tube reveals ciliated cells and peg cells. The peg cells capacitate spermatozoa, making them capable of fertilizing an ovum in the ampulla. Nutrients secreted by the peg cells aid in maintenance of the spermatozoa and the ovum. The cilia beat toward the uterus, helping to maintain sterility of the tube.