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Hand walking often elicits automatic, alternating leg movements similar to upright bipedal locomotion. Research shows that these leg movements are caused in part by neural coupling between arm and legs. [1] As with other physical skills, one must practice hand walking in order to become proficient and develop adequate endurance.
It tends to separate the fingers as it extends them. In the fingers, the extensor digitorum acts principally on the proximal phalanges, acting to extend the metacarpophalangeal joint . Extension of the proximal and distal interphalangeal joints , however, is mediated predominantly by the dorsal and palmar interossei and lumbricals of the hand .
1.1 Arm and shoulder. 1.2 Hand and wrist. 2 Lower limb. 3 Other. ... Abduction is an anatomical term of motion referring to a movement which draws a limb out to the ...
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Pronation at the forearm is a rotational movement at the radioulnar joint, or of the foot at the subtalar and talocalcaneonavicular joints. [ 11 ] [ 12 ] For the forearm, when standing in the anatomical position , pronation will move the palm of the hand from an anterior-facing position to a posterior-facing position without an associated ...
A woman exercising. In physiology, motor coordination is the orchestrated movement of multiple body parts as required to accomplish intended actions, like walking.This coordination is achieved by adjusting kinematic and kinetic parameters associated with each body part involved in the intended movement.
The radial nerve innervates the finger extensors and the thumb abductor; that is, the muscles that extend at the wrist and metacarpophalangeal joints (knuckles) and abduct and extend the thumb. The median nerve innervates the flexors of the wrist and digits, the abductors and opponens of the thumb, the first and second lumbricals .
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