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The finger is any of the digits of the hand in humans and other species such as the great apes. The grace of the fingers is not sacrificed to their dexterity due to the placement of their muscles in the fore arm, with motion communicated via long tendons which may be observed on the back of the hand. A notable exception is the thumb, with its flexor and rotators comprised in the hand itself.
The bones of the fingers are called phalanges (singular phalanx); the thumb has two phalanges, and the other fingers have three. The fingers have common names from the thumb inward:
Relative to much of the skinThis article is about skin in the biological sense. For other uses of skin see skin (computing) and skinhead. Regarding exposure of the skin to be seen by others, or prevention of this, see nudity, nudism, modesty, clothing. Fruits such as oranges also ha of the human body, the fingertips have a high concentration of nerve endings, equipping them as centers of tactile sensation; touchThis article concerns physical and human touch. For other meanings, see Touch (disambiguation). Touching is having or getting a zero distance; in geometry it refers especially to a tangent line or curve (cf. collision). This term can be used to describe iing something or someone is often done with the hands and in particular the fingers.
Another important example of this capacity is in the ability to read BrailleThere is also an asteroid 9969 Braille Braille is a tactile writing system used by blind people. It was invented by Louis Braille of France who was blinded in a childhood accident. At the age of 15 he modified a military system for reading orders at night. Additionally, prehension is enhanced by the presence of the ridges and whorls known as fingerprints. Each finger is protected at its dorsal terminus by a fingernail (Latin unguis, unguiculus).
In young children, the fingertip is one of the few tissues in the human body capable of full regeneration, although this ability disappears after about age 6.