Where does implantation typically occur in the uterus?

Implantation typically occurs in the upper uterus, specifically in the fundal area. This region is abundant in blood supply and provides the ideal environment for the developing embryo. The upper uterus has a thicker and more nutrient-rich endometrial lining, which supports the future growth of the placenta and fetus.

Unlike the upper uterus, the lower uterine segment is generally not the site of implantation, as it is less vascularized and may not provide optimal conditions for embryo development. The cervical canal is not a suitable location for implantation either, as it is designed to allow for the passage of the fetus during delivery and is not equipped to support early gestation. The Fallopian tube is where fertilization occurs, but it is not the site for normal implantation; implanting in the tube can lead to an ectopic pregnancy, which is a medical emergency. Thus, the upper uterus is the correct site for implantation during a normal pregnancy.