North Carolina CNA Written Practice Exam

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What is a prosthesis?

A device that aids in walking
A body part that is malformed
A device that replaces a missing or deformed body part
A tool for physical therapy

The correct answer is: A device that replaces a missing or deformed body part

A prosthesis refers specifically to a device that is designed to replace a missing or deformed body part. This can include limbs, such as arms or legs, or other body parts like teeth. The purpose of a prosthesis is to restore functionality and improve quality of life for individuals who have lost a part of their body due to injury, disease, or congenital conditions. These devices are custom-made to fit the individual's body and can vary greatly in design and materials, depending on the needs of the person using them. In contrast, while a device that aids in walking may seem relevant, it does not encompass the broader definition of a prosthesis, which focuses on replacement rather than assistance alone. A malformed body part does not constitute a prosthesis, as it refers to a body part that is present but not formed correctly. Similarly, while tools for physical therapy may be helpful in rehabilitation, they do not replace body parts and are not classified as prostheses. Understanding what a prosthesis is will help in recognizing its importance in healthcare and rehabilitation settings.