Close Examination of the Cut Uterine Section

Description

Presented in a three-quarters cut section, the uterus is opened to expose the endometrial cavity and the surrounding myometrium, with the fundus positioned superiorly, the body centrally, and the cervix inferiorly. The isthmus forms the short, narrowed transition between the uterine body and cervix, and the cervical canal continues inferiorly toward the external os. Orientation favors an anterolateral perspective, letting you appreciate the thickness gradient of the myometrium from fundus to lower uterine segment. Clear regional boundaries. Understanding these zones matters when you need to localize disease and plan access. The lower uterine segment and isthmus define the usual plane for a low transverse (Pfannenstiel) cesarean hysterotomy, chosen to reduce hemorrhage compared with a more contractile fundal incision, and the cervix is the reference for procedures that must respect the internal os, such as cervical cerclage or dilation and curettage. This view also supports teaching how fibroids (leiomyomata) distort the cavity depending on whether they are submucosal within the endometrium, intramural within the myometrium, or subserosal, even when the serosal surface is not the focus. Use this illustration in gross anatomy and reproductive system modules to teach uterine regional anatomy (fundus, body, isthmus, cervix) alongside uterine cavity configuration. It also fits obstetrics and gynecology texts and patient-facing surgical consent materials where a clear cut section helps explain cesarean incision location, hysteroscopic entry, and why pathology at the cervix behaves differently from disease in the uterine corpus. Anatomical accuracy verified by SciePro's Medical Advisory Board.