Phalanx bone
Phalanx Bone
The Phalanx bone (pronounced: /ˈfælæŋks/), also known as phalanges (plural), is a type of long bone found in the fingers and toes of most vertebrates. The term "phalanx" or "phalanges" is derived from the Greek word 'phalanx', which means 'line of soldiers', due to the bones' arrangement in parallel lines.
Anatomy
Each finger and toe, except the thumb and big toe, has three phalanges: the proximal, middle, and distal phalanges. The thumb and big toe only have two: the proximal and distal phalanges. The proximal phalanges are the largest, the middle phalanges are intermediate in size, and the distal phalanges are the smallest.
Function
The phalanges play a crucial role in the fine motor movements of the fingers and toes, such as gripping and walking. They also provide support and flexibility to the hands and feet.
Related Terms
- Metacarpal bones: The five bones in the hand that connect the wrist to the fingers.
- Metatarsal bones: The five bones in the foot that connect the ankle to the toes.
- Carpal bones: The eight small bones that make up the wrist.
- Tarsal bones: The seven bones that make up the ankle.
Etymology
The term "phalanx" is derived from the Greek word 'phalanx', which means 'line of soldiers'. This is due to the arrangement of the phalanges in parallel lines, similar to soldiers in formation.
External links
- Medical encyclopedia article on Phalanx bone
- Wikipedia's article - Phalanx bone
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