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Naheer
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retinacula
strong fascial bands that help tendons of muscles in hand stay close to bones
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mainly all flexors are innervated by ____ nerve and extensors are innervated by _____ nerve
median, radial
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what are the 4 superficial flexors?
pronator teres, flexor carpi radialis, flexor carpi ulnaris and palmaris longus
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what is the intermediate flexor?
flexor digitorum superficialis
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what are the 3 deep flexors?
flexor digitorum profundus, flexor pollicus longus and pronator quadratus
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Pronator Teres
- o:medial epicondyle of humerus
- i:lateral surface radius
- a:flex and pronate
- inn:median nerve
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for all the forearm flexors what is the general origin insertion action and innervation..?
- O: humerus radius and ulna
- I:carpals, metacarpals and phalanges
- Inn:median and some ulnar
- A: flex the hand and digits
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Flexor carpi radialis
- o: medial epicondyle humerus
- i: base 2nd and 3rd metacarpals
- inn: median nerve
- A: flex and adduct at wrist
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palmaris longus
- o:Medial epicondyle ofhumerus
- i:flexor retinaculum and palmar aponeurosis
- inn:median
- a:flex
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flexor carpi ulnaris
- o: olecranon ulna
- i: pisiform hook of hamate and 5th metacarpal
- inn: ulnar
- a: flex and abduct hand
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Flexor digitorum superficialis
- O: Medial epicondyle of humerus, ulna, radius
- I: Middle phalanges of medial 4 digits
- A: Flexes proximalinter‐phalangeal (IP)joints and metacarpophalangealjoints(MP)
- Inn: median nerve
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Flexor digitorum profundus
- o:ulna and interosseous membrane
- i: distal phalanges 2-5
- inn: flex distal interphalangeal joints
- a:
median and ulnar
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Flexor Pollicis Longus
- o: radius and interosseous membrane
- i: distal phalnx of thumb
- a: flex thumb
- inn: median nerve
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Pronator quadratus
- o: distal portion of shaft of ulna
- i: distal portion shaft of radius
- a: pronate forearm
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