What is the name of the bone that forms the thumb?
Understand the Problem
The question is asking for the specific name of the bone in the human body that is responsible for forming the thumb. This requires knowledge of human anatomy.
Answer
First metacarpal bone, proximal phalanx, and distal phalanx.
The bone that forms the thumb is called the first metacarpal bone, along with two phalanges: the proximal phalanx and the distal phalanx.
Answer for screen readers
The bone that forms the thumb is called the first metacarpal bone, along with two phalanges: the proximal phalanx and the distal phalanx.
More Information
The thumb's metacarpal bone is unique for being the shortest and most mobile compared to the other metacarpals. Additionally, the thumb only has two phalanges, unlike other fingers which have three.
Tips
A common mistake is assuming all fingers have the same number of bones. The thumb has one less phalanx than the other fingers.
Sources
- Anatomy of the Hand | Johns Hopkins Medicine - hopkinsmedicine.org
- Hand Anatomy | Kirkland, WA | EvergreenHealth - neuro-spine-ortho.com
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