Preset trays hold all instruments need in a particular procedure. It is put together in a tub and trays are easily exchanged for other instruments. It is designed to increase efficiency in operations, minimize waiting time and space is reconfigured.
The answer is esophagus. The esophagus is the tube that squeezes the food down to the stomach by peristalsis. This part connects the throat and the stomach. It is a tube lined with mucous membrane.
the answer is none of the above.
Explanation:
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