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  2. List of gestures - Wikipedia

    en.wikipedia.org/wiki/List_of_gestures

    The Finger, an extended middle finger with the back of the hand towards the recipient, is an obscene hand gesture used in much of Western culture. [17] Finger gun is a hand gesture in which the subject uses their hand to mimic a handgun. If pointed to oneself (with or without the "hammer falling" of the thumb indicating firing, or a small tilt ...

  3. Hand clasping - Wikipedia

    en.wikipedia.org/wiki/Hand_clasping

    Hand wringing is a gesture characterized by repeatedly rubbing or twisting one's hands together, often as a sign of distress or nervousness, while folding or clasping.. Hand wringing has been studied in psychology to understand its underlying motivations and implications for mental well-being, of which include nonverbal communication and self-soothing beha

  4. Thumb - Wikipedia

    en.wikipedia.org/wiki/Thumb

    Like human hands, the thumb of a robotic hand also plays a key role in gripping an object. One inspiring approach of robotic grip planning is to mimic human thumb placement. [38] In a sense, human thumb placement indicates which surface or part of the object is good for grip. Then the robot places its thumb to the same location and plans the ...

  5. Upper limb - Wikipedia

    en.wikipedia.org/wiki/Upper_limb

    The five muscles acting on the wrist directly — flexor carpi radialis, flexor carpi ulnaris, extensor carpi radialis, extensor carpi ulnaris, and palmaris longus — are accompanied by the tendons of the extrinsic hand muscles (i.e. the muscles acting on the fingers). Thus, every movement at the wrist is the work of a group of muscles ...

  6. Hand - Wikipedia

    en.wikipedia.org/wiki/Hand

    A hand is a prehensile, multi-fingered appendage located at the end of the forearm or forelimb of primates such as humans, chimpanzees, monkeys, and lemurs.A few other vertebrates such as the koala (which has two opposable thumbs on each "hand" and fingerprints extremely similar to human fingerprints) are often described as having "hands" instead of paws on their front limbs.

  7. Scaphoid bone - Wikipedia

    en.wikipedia.org/wiki/Scaphoid_bone

    It can also be palpated in the volar (palmar) hand/wrist. Its position is the intersections of the long axes of the four fingers while in a fist, or the base of the thenar eminence. When palpated in this position, the bone will be felt to slide forward during radial deviation (wrist abduction) and flexion.

  8. Index finger - Wikipedia

    en.wikipedia.org/wiki/Index_finger

    The index finger (also referred to as forefinger, [1] first finger, [2] second finger, [3] pointer finger, trigger finger, digitus secundus, digitus II, and many other terms) is the second digit of a human hand. It is located between the thumb and the middle finger. It is usually the most dextrous and

  9. Finger-counting - Wikipedia

    en.wikipedia.org/wiki/Finger-counting

    Finger-counting systems in use in many regions of Asia allow for counting to 12 by using a single hand. The thumb acts as a pointer touching the three finger bones of each finger in turn, starting with the outermost bone of the little finger. One hand is used to count numbers up to 12. The other hand is used to display the number of completed ...