NEET BIOLOGY

Detailed explanation-1: -During sex, sperm cells travel through the vagina to the uterus and fallopian tubes. In the fallopian tube, the sperm meets the egg that was released from the ovary during ovulation.

Detailed explanation-2: -Contact between the egg and sperm is random. Once the egg arrives at a specific portion of the tube, called the ampullar-isthmic junction, it rests for another 30 hours. Fertilization-sperm union with the egg-occurs in this portion of the tube. The fertilized egg then begins a rapid descent to the uterus.

Detailed explanation-3: -Ampulla: The major channel in your fallopian tube, located in-between the infundibulum and the isthmus. Fertilization most often takes place in the ampulla. Isthmus: A tiny channel that connects the ampulla to the portion of your fallopian tube that’s closest to your uterus, the intramural portion.

Detailed explanation-4: -The fallopian tubes are a pair of tubes that eggs travel through to get from the ovaries to the uterus. Each month, during a process called ovulation, one of the ovaries releases an egg that travels down one of the fallopian tubes, where it may or may not be fertilized by a sperm.