Flexor Forearm + Palm

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Author:
gurpleguy
ID:
281870
Filename:
Flexor Forearm + Palm
Updated:
2014-09-02 21:18:48
Tags:
medical school
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Description:
Week 3
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  1. pronator teres
    • origin- medial epicondyle and proximal ulna
    • insertion- shaft of the radius
    • innervation- median nerver (C5-T1)
    • action- pronation
  2. flexor carpi radialis
    • origin- medial epicondyle and supracondylar ridge of the humerus
    • insertion- base of the 2nd and 3rd metacarpals
    • innervation- median nerve (C5-T1)
    • action- flexion at the wrist joint, abduction at the wrist
  3. palmaris longus
    • origin-┬ámedial epicondyle and supracondylar ridge of the humerus
    • insertion- palmar aponeurosis
    • innervation- median nerve (C5-T1)
    • action- flexion at the wrist joint (weak)
  4. flexor digitorum superficialis
    • origin-┬ámedial epicondyle and supracondylar ridge of the humerus
    • insertion- midle phalanges of digits 2-5
    • flexor carpi ulnaris
    • innervation- median nerve (C5-T1)
    • action- flexion of the digits 2-5 at MP and PIP joints
  5. flexor carpi ulnaris
    • origin-┬ámedial epicondyle and supracondylar ridge of the humerus
    • insertion- base of the 5th metacarpal
    • innervation- ulnar nerve (C8-T1)
    • action- flexion and adduction at the wrist
  6. flexor digitorum profundus: lateral two bellies
    • origin- radius, ulna and interosseous membrane
    • insertion- distal phalanges of digits 2-5
    • innervation- anterior interosseous nerve
    • action- flexion of the digits 2-5 at the MP, POP and DIP joints
  7. flexor digitorum profundus- medial two bellies
    • origin- radius, ulna, and interosseous membrane
    • insertion- distal phalanges of digits 2-5
    • innervation- ulnar nerve
    • action- flexion of the digits 2-5 at the MP, PIP, and DIP joints
  8. flexor pollicis longus
    • origin- radius, ulna, and interosseous membrane
    • insertion- distal phalanx of digit 1
    • innervation- anterior interosseous nerve
    • action- flexion of the thumb
  9. pronator quadratus
    • origin- disal ulna
    • insertion- distal radius
    • innervation- anterior interosseous nerve
    • action- pronation
  10. flexor pollicis brevis
    • origin- lateral carpal bones and flexor retinaculum
    • insertion- base of the proximal phalanx of digit 1
    • innervation- recurrent motor branch of the median nerve
    • action- flexion of the thumb
  11. abductor pollicis brevis
    • origin- lateral carpal bones and flexor retinaculum
    • insertion- base of the proximal phalanx of digit 1
    • innervation- recurrent motor branch of the median nerve
    • action- abduction of the thumb
  12. opponens pollicis
    • origin- lateral carpal bones and flexor retinaculum
    • insertion- metacarpal 1
    • innervation- recurrent motor branch of the median nerve
    • action- opposition of the thumb
  13. flexor digiti minimi
    • origin- medial carpal bones and flexor retinaculum
    • insertion- base of the proximal phalanx of digit 5
    • innervation- deep ulnar nerve
    • action- flexion of digit 5
  14. abductor digiti minimi
    • origin- medial carpal bones and flexor retinaculum
    • insertion- base of the proximal phalanx of digit 5
    • innervation- deep ulnar nerve
    • action- abduction of digit 5
  15. opponens digit minimi
    • origin- medial carpal bones and flexor retinaculum
    • insertion- metacarpal 5
    • innervation- deep ulnar nerve
    • action- opposition of digit 5
  16. lumbricals
    • origin- tendons of the flexor digitorum profundus
    • insertion- extensor expansion of digits 2-5
    • innervation- deep ulnar nerve lumbricals 3&4 and median nerve lumbricals 1&2
    • action- flexion of the MP joint, extension of the IP joints via extensor expansion
  17. palmar interossei (PAD)
    • origin- metacarpals
    • insertion- proximal phalanx and extensor expansion of digits 2-5
    • innervation- deep ulnar nerve
    • action- adduction of the digits 2-5, assist in MP flexion and IP extension
  18. dorsal interossei (DAB)
    • origin- metacarpals
    • insertion- proximal phalanx and extensor expansion of digits 2-5
    • innervation- deep ulnar nerve
    • action- abduction of the digits 2-5, assist in MP flexion and IP extension
  19. adductor pollicis: transverse head, oblique head
    • origin- 3rd metacarpal, capitate
    • insertion- base of the proximal phalanx of digit 1
    • innervation- deep ulnar nerve
    • action- adduction of the thumb
  20. thenar compartment
    flexor pollicis brevis, abductor pollicis brevis, opponens pollicis
  21. hypothemar compartment
    flexor digiti minimi, abductor digiti minimi, opponents digiti minimi
  22. central compartment
    lumbricals
  23. adductor/interosseous compartment
    palmar interossei, dorsal interossei, adductor pollicis

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