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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.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Hand

 

the terminal section of the upper extremity (arm) in man, capable of performing extremely delicate and differentiated movements.

The hand consists of the carpus, the metacarpus, and the digits. Of the eight bones of the carpus, which are arranged in two rows, three articulate with the bones of the forearm (the radiocarpal joint) and with those of the metacarpus, which make up the base of the hand. The basal phalanges of the fingers articulate with the metacarpal bones.

The fingers have great mobility. The first digit, or thumb, can be opposed to the remaining four digits. This is especially important for grasping and holding objects. Movement of the hand and fingers is made possible by muscles located both in the hand itself and in the forearm. The tendons of the hand muscles pass through the bone-fiber canals and are surrounded by sheaths that are longer in the first and fifth digits.

The muscles that move the hand and fingers are innervated by branches of the ulnar, radial, and median nerves. The hand receives its blood supply from the radial and ulnar arteries, which form deep and superficial arterial arches and plexuxes on the hand’s palmar surface. The deep and superficial venous networks pass into the antebrachial veins.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

hand

[hand]
(anatomy)
The terminal part of the upper extremity modified for grasping.
(control systems)
(textiles)
The quality or feel of a fabric.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

hand

1. The direction, left or right, of the swing of a door (when viewed from the side usually considered the outside) or associated doorframes or hardware. A left-hand door has hinges on the left and the door swings away; a left-hand reverse door swings toward the viewer. A right-hand door has hinges on the right and swings away. A right-hand reverse door swings toward the viewer.
2. Of a spiral stair, designates the direction of turn of the stair. Right-hand refers to a stair on which the user turns clockwise as he descends. Left-hand refers to a stair on which the user turns counter-clockwise ashe descends.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

hand

1. 
a. the prehensile part of the body at the end of the arm, consisting of a thumb, four fingers, and a palm
b. the bones of this part
2. the corresponding or similar part in animals
3. 
a. the cards dealt to one or all players in one round of a card game
b. a player holding such cards
c. one round of a card game
4. a member of a ship's crew
5. a unit of length measurement equalling four inches, used for measuring the height of horses, usually from the front hoof to the withers
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

HAND

(chat)
Have A Nice Day. Often used sarcastically and in connection with HTH, as in:

> Where's the point of alt.stupidity?

Between the 't' and the 's'. HTH. HAND.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

Hands

(dreams)
We express ourselves with our hands, and appropriate reading of body language is a valuable source of information. Likewise, in the dream state the hands may reveal information about emotions, intentions, and overt behaviors. For example, if in your dream you see clenched fists you may have much repressed anger. Sometimes extended hands suggest a need to develop close friendships. If the hands in your dreams are stroking you, you may be feeling sexy.
Bedside Dream Dictionary by Silvana Amar Copyright © 2007 by Skyhorse Publishing, Inc.
References in periodicals archive ?
In the process industries it is vital that the distributed control system or control room receives a 100 per cent-trustworthy signal from hand-operated gate, globe or rising stem valves.
* Offer a choice of foot and hand mechanical controls or hand-operated pilot controls, both of which incorporate the standard auxiliary hydraulics function
When at rest and in operation, hand-operated leveling jacks, with rubber pads for vibration control, lift the casters from the floor to provide a solid foundation.
It uses the same plasticating rotor as the LME but feeds the melt to a hand-operated compression mold for producing test-sample disks.
Loss or loss of use of left foot, or ankylosis (fusing) of the left knee or hip: * Automatic transmission * Hand-operated dimmer switch (if optional) * Hand-operated parking brake (if optional) * For standard transmissions, a bar welded to the clutch pedal to prevent the foot from slipping down or off to the side
This provider of testing equipment designed to evaluate mechanical properties of materials and components has introduced its HOM (hand-operated marker), said to be an innovative device designed for use with the company's non-contacting video extensometers.
In addition to hand-operated equjpment the company offers a full line of fusion equipment and accessories, including electric hydraulic machines up to 42 inches.
The company needed to present its puddings, in a way that allowed customers to see the product, so decided on a PA217 from Packaging Automation a hand-operated machine which heat seals film and board lids to compatible preformed containers.
The expanded line now includes Hydratight Series hand-operated torque multipliers and the established line of Sweeney torque multipliers.
STI will also featured new automatic doctoring system for its small 606AW hand-operated pad printer.