Final answer:
The kidney rests are positioned over the center break of the OR bed, between the body and leg sections, providing support during surgical procedures.
Step-by-step explanation:
The question pertains to the setup of an operating room (OR) bed, specifically regarding the part over the center break of the bed. In the context of an OR bed, which is used during surgical procedures, the kidney rests are the parts that are located over the center break, between the body and leg sections of the bed. These rests provide support and access to the patient's kidney area during procedures such as a nephrectomy. Understanding the configuration of an OR bed is crucial for those involved in perioperative care. Proper positioning on the kidney rests can help in maintaining the patient's safety and ensuring optimal surgical access.