Skip over navigation
Encyclopedia
Dictionary
Thesaurus

More Sponsored Links For:

hand
Columbia Encyclopedia entry: hand
Hand, terminal part of the forelimb in primates. The human hand consists of the wrist, palm, four fingers, and thumb. In humans and other primates, the thumb is opposable, i.e., it can be moved into a position opposite to the other four digits. Opposable thumbs make possible precise movements such as grasping small objects. In vertebrates other than humans, the primary function of the hand is locomotion; the human hand, due to the evolutionary development of bipedalism, is freed for manipulative tasks. There are 27 bones in the human hand. The wrist, which joins the hand to the forearm, contains eight cubelike bones arranged in two rows of four bones each. The metacarpus, or palm, is composed of five long metacarpal bones. Fourteen phalangeal bones constitute the four fingers and thumb (three in each finger, two in the thumb). Ligaments interconnect the bones of the hand. The bones of the digits are anchored to muscles in the hand and to muscles in the arms and shoulders, through connections to tendons, permitting a wide range of movements. Among humans, the undersides of the fingers and palms have distinctive ridges, which improve grip and can be used as identification marks.
Wikipedia search results for: Hand
From Wikipedia, the free encyclopedia
A hand is a prehensile, multi-fingered body part normally located at the end of an arm or forelimb of a primate. Hands are the chief organs for physically manipulating the environment, used for both gross motor skills and fine motor skills. The fingertips contain some of the densest areas of nerve endings on the body, are the richest source of tactile feedback, and have the greatest positioning capability of the body; thus the sense of touch is intimately associated with hands. Like other paired organs, each hand is dominantly controlled by the opposing brain hemisphere, and thus handedness, or preferred hand choice for single-handed activities such as...more »
Columbia Encyclopedia search results: hand
Results 1 - 10  of 868
  • Black Hand

    Black Hand, symbol and name for a criminal and terroristic secret society, and especially associated with the Mafia and the Camorra. The Black Hand flourished in Sicily in the late 19th cent.,...

  • Hand, Learned

    Hand, Learned, 1872–1961, American jurist, b. Albany, N.Y. He received his law degree from Harvard in 1896. He was a judge of the U.S. District Court for New York's Southern District (1909–24)...

  • Hand, Wayland Debs

    Hand, Wayland Debs, 1907–86, folklorist, b. Auckland, New Zealand. Hand wrote Popular Beliefs and Superstitions from North Carolina (1964), which is ranked among the finest published studies o...

  • Abner

    Abner, in the Bible, relative of Saul and commander in chief of his army. Jealousy and revenge probably caused his death at Joab's hands.

  • Pekahiah

    Pekahiah, in the Bible, king of Israel, son and successor of Menahem. His reign was ended by his murder at the hands of his general Pekah.

  • baccarat

    Baccarat, French card game formerly widely played in European casinos but now supplanted in popularity by chemin de fer. The banker plays against the hands he deals to two other players called...

  • Aroer

    Aroer, border town, on the north side of the Arnon River and E of the Dead Sea, the modern Arair (Jordan). Aroer, which changed hands frequently, is mentioned in the Moabite stone.

  • Nemean lion

    Nemean lion, in Greek mythology, an enormous lion, said to be the offspring of Echidna and Typhon. It was invulnerable to all weapons until Hercules, in his first labor, strangled it with his ...

  • synecdoche

    Synecdoche, figure of speech, a species of metaphor, in which a part of a person or thing is used to designate the whole—thus, The house was built by 40 hands for The house was built by 20 peo...

  • Heimlich maneuver

    Heimlich maneuver, emergency procedure used to treat choking victims whose airway is obstructed by food or another substance. It forces air from the lungs through the windpipe, pushing the obs...

More Sponsored Links For:

hand
1 2 3 4 5 6 7 8 9 10 Next

Video Results

powered by Truveo
Toggle Results

Reference Center To Go

Get Dictionary at your fingertips!

Download the Toolbar Now
About This Page | Browse Directory | Tell Us What You Think
© 2009 ReferenceCenter.com. All Rights Reserved.