The heart.
Pretty much any part of the human body that is either assisted or replaced by a mechanical equivalent. Like a prosthetic leg or hand, or even a pacemaker.
A pacemaker delivers an electric stimulus to the heart.
the answer is in the question. if the pacemaker is replaced the leads are used for it.
Pacemaker Defibrillator
An Artificial Pacemaker basically regulates the rate of the heart beat depending on the needs of the body.
To protect the parts of the pacemaker from body fluids as plastics are very unreactive and will not be affected.
The pacemaker will regulate the heartbeat, and a regulated heartbeat will regulate the speed blood is moved throughout the body. Improved blood flow, especially in the legs, will improve general health across the board.
the ear
Answer External means on the outside. Implanted means that the pacemaker goes inside the body.
The heart itself tells the heart to beat. It contains a small cluster of nerves that act as a biological "pacemaker".
pacemaker
the cold part