1.

What is Endoscope?

A. It is an optical instrument used to see inside the alimentary canal.
B. It is a device placed on the patient's chest to regulate irregular heartbeat
C. It is an instrument used to test the development of the ear.
D. It is a device for recording electrical signals generated by human muscles.
Answer» B. It is a device placed on the patient's chest to regulate irregular heartbeat


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