What structure is located between the body and the cervix?

The isthmus is the structure located between the body of the uterus and the cervix. This narrow region plays a crucial role in the anatomy of the uterus, acting as a transition zone. The isthmus is significant during pregnancy as it connects the upper body of the uterus, which expands to accommodate the growing fetus, with the cervix, which serves as the opening to the birth canal.

In contrast, the fundus is the top part of the uterus that is farthest from the cervix, and the vagina is the canal that leads from the cervix to the outside of the body. The peritoneum refers to the membrane lining the abdominal cavity and does not specifically connect the body and cervix of the uterus. Understanding the roles and locations of these structures is essential in the context of reproductive anatomy and obstetric practice.