heart wiki:
[ (Latin cor) is a hollow, muscular organ that pumps blood through the blood vessels by repeated, rhythmic contractions. The term cardiac means "related to the heart", from the Greek kardia (καÏδια) for "heart".
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fingerprint wiki:
>This article is about human fingerprints. See also Fingerprint (disambiguation). A fingerprint is an imprint made by the pattern of ridges on the pad of a human finger. These ridges are commonly believed to provide traction for grasping objects. Fingerprints are unique, with no two fingers having the exact same friction ridge characteristics. Also, fingerprints do not change significantly with age. If a finger is damaged, it will normally heal in such a way that the fingerprint is restored. Because of these characteristics, a person's fingerprint can be used as a method to identify human individuals.
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