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16 Cards in this Set
- Front
- Back
hand and wrist
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29 bones
25 joints 30 muscles (18 are in the hand only) |
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bones
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carpals (8)
metacarpals (5)- 1 being the thumb phalanges (14)- 3 each finger, 2 thumb |
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joint between the radius and the carpals
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radiocarpal (wrist joint)
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joint between the carpals
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intercarpal joints: permit only slight gliding motion
however the gliding adds up to a modified hinge type of movement |
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joint between the carpals and metacarpals
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carpometacarpal joints: joint of the thumb is a prime example of a saddle joint
- joint of the fingers have slight gliding movement |
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joint between the metacarpals and phalanges
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metacarpophalageal joints (knuckles): proximal phalanges with metacarpals
-condyloid joints -encase in capsules -collateral ligaments -thumb more of a hinge joint flexion: surface of the thumb approaches base of thumb extension: return movement of flexion |
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joint between the phalanges
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interphalangeal joints: joint between adjacent phalanges of any of the 5 digits
all are hinge joint, permit only flexion and extension strengthened by ligaments |
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radiocarpal joint
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condyloid joint
4 ligaments |
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6 muscles of just the wrist
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anterior: flexor carpi radialis, flexion carpi ulnaris, palmaris longus
posterior: extensor carpi radialis brevis, extensor carpi radialis longus, extensor carpi ulnaris |
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pollicus
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thumb
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digitorum
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fingers
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palmaris
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palmar aspect of hand
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carpi
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carpal. metacarpal attachment
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all wrist flexors generally have their origin...
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on the anteromedial aspect of proximal forearm and medial epicondyle of humerus with insertions on the anterior aspect of the wrist and hand= start above elbow in the corner of the elbow
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wrist extensors have their origins:
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on the opposite corner of the elbow ( on the thumb side)
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cooperative actions of wrist and digits
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long fingers muscles do not have sufficient length to permit full ROM in joints of finders and wrist at the same time (tight fist and flex wrist thing)
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