MICROANATOMY

Detailed explanation-1: -Ampulla: The major channel in your fallopian tube, located in-between the infundibulum and the isthmus. Fertilization most often takes place in the ampulla.

Detailed explanation-2: -After ovulation, sperm approach the ovum, and fertilization by a single sperm usually occurs at the point where the isthmus joins the wider oviductal ampulla (ampullary–isthmic junction).

Detailed explanation-3: -The first segment, closest to the uterus, is called the isthmus. The second segment is the ampulla, which becomes more dilated in diameter and is the most common site for fertilization.

Detailed explanation-4: -The ampulla is typically where the sperm are met and fertilization occurs; meiosis II is promptly completed. After fertilization, the ovum is now called a zygote and travels toward the uterus with the aid of the hairlike cilia and the activity of the muscle of the fallopian tube.