Final answer:
An artificial part to remedy a defect in the body is True, as demonstrated by the development of implantable kidneys that mimic the function of a real kidney.
Step-by-step explanation:
An artificial part to remedy a defect in the body is True. One example of an artificial part used in medicine is the implantable kidney developed by Dr. William Fissell. This artificial kidney uses microchips to mimic the function of a real kidney, removing waste products, salt, and water from the body.