Final answer:
In a hysterectomy, heavy hemostatic clamps are used to grasp and divide supportive tissue and blood vessels to mobilize the uterus. It is a critical step in the surgery to control bleeding and support tissue dissection.
Step-by-step explanation:
During a hysterectomy, the structures that must be divided to mobilize the uterus include the supportive tissues, blood vessels, and connecting ligaments. In this surgery, heavy hemostatic clamps are often used to grasp the tissue to control bleeding and support the dissection of these structures. A hysterectomy is a significant surgical procedure where careful handling of all anatomical elements is crucial to minimize the risk of complications.