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25 Cards in this Set
- Front
- Back
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Deep innervation
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Nerve
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Extensor Digitorum origin and insertion
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origin: Lateral epicondyle of humerus; insertion: By four tendons into extensor expansions and distal phalanges of fingers 2-5
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Extensor Carpi Ulnaris action
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Extends and adducts wrist (in conjunction with flexor carpi ulnaris)
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Extensor Carpi Ulnaris innervation
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Posterior interosseous nerve
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Extensor Carpi Radialis Brevis origin and insertion
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origin: Lateral epicondyle of humerus; insertion: Base of third metacarpal
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Extensor Digitorum action
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Prime mover of finger extension; extends wrist; can abduct (flare) fingers
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Extensor Digitorum innervation
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Posterior interosseous nerve (branch of radial nerve)
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Extensor Carpi Radialis Longus origin and insertion
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origin: Lateral supracondylar ridge of humerus; insertion: Base of second metacarpal
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Extensor Carpi Radialis Brevis action
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Extends and abducts wrist; acts synergistically with extensor carpi radialis longus to steady wrist during finger flexion
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Extensor Carpi Radialis Brevis innervation
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Deep branch of radial nerve
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Superficial origin and insertion
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origin: Origin; insertion: Insertion
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Extensor Carpi Radialis Longus action
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Extends and abducts wrist
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Extensor Carpi Radialis Longus innervation
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Radial nerve
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Pronator Quadratus origin and insertion
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origin: Distal portion of anterior ulnar shaft; insertion: Distal surface of anterior radius
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Superficial action
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Action
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Superficial innervation
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Nerve
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Flexor Digitorum Profundus origin and insertion
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origin: Anteromedial surface of ulna and interosseous membrane; insertion: By four tendons into distal phalanges of fingers 2-5
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Pronator Quadratus action
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Pronates forearm; acts with pronator teres; also helps hold ulna and radius together
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Pronator Quadratus innervation
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Median nerve
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Flexor Pollicis Longus origin and insertion
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origin: Anterior surface of radius and interosseous membrane; insertion: Distal phalanx of thumb
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Flexor Digitorum Profundus action
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Slow-acting finger flexor; assists in flexing wrist; the only muscle that can flex distal interphalangeal joints
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Flexor Digitorum Profundus innervation
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Medial half by ulnar nerve, lateral half by median nerve
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Deep origin and insertion
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origin: Origin; insertion: Insertion
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Flexor Pollicis Longus action
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Flexes distal phalanx of thumb; weak flexor of wrist
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Flexor Pollicis Longus innervation
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Median nerve
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