Fun and Interesting Facts for You
A type of digit on the human body is explained on Facts about Fingers. It can be found on the hands. It is known as an organ of sensation and manipulation. Phalanges are the bones found on the five digits of human fingers. In general, human beings have five digits of finger on each hand. In rare cases, a number of people have fewer or more than five digits because of medical amputations, accidents, or congenital disorders. The latter one includes oligodactyly and polydactyly. Here are other interesting facts about fingers:
The thumb is considered as the first digit of human fingers. The next part is called index finger. Then it is followed by middle finger and ring finger. The last one is called pinky or little finger.
Facts about Fingers
A thumb has a special status related to its definition. Some believe that it is a finger. Others state that it is not a finger.
Metacarpal bones are the five bones which makeup the palm. Phalanx bones are also called phalanges which makeup 14 digital bones of human hands. The thumb has two phalanges. However, the middle phalanx is not available in the thumb.
Related Article: 10 Facts about the Femur
Fingers Facts
The other four fingers contain three phalanges. They are the proximal phalanx, middle phalanx, and distal phalanx. The nails are carried by the latter one.
The most powerful movement of finger is flexion. The finger movement has impressive precision.
If you think that muscles are found in fingers, you are wrong. The muscles of the forearms and palm move the finger joints.
The intrinsic and extrinsic muscles are the two divisions of muscles of the fingers. The muscle belly housed on the forearm is included as extrinsic muscle.
Fingers
The touch receptors and thermoreceptors are highly concentrated in the fingertips. The sensitivity of fingertips to moisture, texture, vibration, pressure and temperature is high.
Read Also: 10 Facts about Fingernails
The wrinkled fingertips occur when you immerse them inside the water for a long period.
Fingernails
Polydactyl is a defined as a rare case, which affects the people whose number of finger digits is more than that of normal people.
Do you have any comment on facts about fingers?