1 Transmission: neurons transmit these signals to pain-processing structures of the spinal cord and brain. 2  Modulation: the signals can be amplified or dampened at various points in the pathway to facilitate or inhibit transmission, thereby enhancing or reducing the sensation of pain.
The sperm usually fertilizes the egg in the Fallopian tubes. Then, the fertilized egg moves down to the uterus where it implants, causing pregnancy. The segment of the Fallopian Tube where fertilization commonly occurs is the ampulla..
  fallopian tubes In the human body, fertilization of egg cells occur in the oviduct (also called the fallopian tube) of the female's reproductive system.ertilisation occurs in the fallopian tube (aka oviduct/ uterine tube). Implantation occurs in the uterus (aka womb). If the zygote (fetilised egg) were to implant itself â¦ away from the uterus, it would be classified as an ectopic pregnancy and the potential mother would have to go through an abortion or she would die.