Texas Medical Assistant Certification Practice Test

Which bone in the body is shaped like a crescent moon and found in the wrist?

1. Pisiform bone

2. Scaphoid bone

3. Lunate bone

4. Hamate bone

The correct answer is: Lunate bone

The bone shaped like a crescent moon and located in the wrist is the lunate bone. Its distinct curved or crescent-like shape allows it to fit snugly between other carpal bones, contributing to the overall structure and function of the wrist joint. The lunate plays a crucial role in wrist movement and stability, facilitating the complex actions required for hand movements. Understanding the anatomy of the carpal bones, including the lunate, is essential for recognizing their functional significance in the wrist’s range of motion and ability to bear weight during activities.