Finger Diagram Skin. The skin s primary function is to serve as a protective barrier that interacts with a sometimes hostile environment. The largest joint of each finger lies between the finger and the hand.
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It s ever changing and it contains many specialized cells and structures. The thumb has two knuckle joints. Fingerprint identification known as dactyloscopy or hand print identification is the process of comparing two instances of friction ridge skin impressions see minutiae from human fingers or toes or even the palm of the hand or sole of the foot to determine whether these impressions could have come from the same individual.
A fingernail is produced by living skin cells in the finger.
Because fingers are used for many everyday activities they are at higher risk than other parts of the body for traumatic injury including sports injuries workplace injuries and other accidents. Finger fractures may account for up to 10 of all bone fractures. It s ever changing and it contains many specialized cells and structures. The median nerve innervates the finger s skin.
