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2.5

  1. what compartment do the flexors and pronators fall on?
    anterior compt.
  2. what 2 nerves innervate the msucles on anterior compartment of forearm?
    median and ulnar nerve
  3. where are many of the msucles of the forearm located?
    • humerus
    • *allows the proximal part of humerus to be bulky and not the wrist and hand
  4. how many muscles are on the forearm?
    20
  5. what are the 5 superficial msucles of anterior compartment of forearm?
    -pronator teres

    -flexor carpi radialis

    -palmaris longus

    -flexor carpi ulnaris

    -felxor digitorium superficialis
  6. what site do all of the 5 superficial msucles of forearm of anterior compt. insert?
    medial epicondyle of the humerus
  7. anterior compt.) superficial msucles) pronator teres- desceription
    round tubular shaped muscle
  8. anterior compt.) superficial msucles) which is the most lateral of teh superficial flexors?
    pronator teres
  9. anterior compt.) superficial msucles) pronator teres- origin (2)
    medial epicondyle of humerus and somewhat off the coronoid process of ulna
  10. anterior compt.) superficial msucles) pronator teres- inserts?
    • lateral side of radius
    • *by mid shaft
  11. anterior compt.) superficial msucles) pronator teres- innervated?
    median nerve
  12. anterior compt.) superficial msucles) pronator teres- actions? (2)
    -responsible for pronating the forearm

    -it can also participate in flexion at the elbow
  13. anterior compt.) superficial msucles) under what 2 conditions does the pronator teres become pronounceD?
    -forearm is pronated

    -strongly flexed
  14. what is the cubital fossa?
    triangular area on the anterior surface of the elbow
  15. anterior compt.) superficial msucles) flexor carpi radialis- origin
    medial epicondyle of humerus
  16. anterior compt.) superficial msucles) felxor carpi radialis- inserts?
    • base of 2-3 metacarpels
    • *to do this it has to pass deep to the flexor retinaculum
  17. anterior compt.) superficial msucles) flexor carpi radialis- innervated ?
    median nerve
  18. anterior compt.) superficial msucles) flexor carpi radialis- actions? (2)
    -flexes the wrist

    -abducts the hand
  19. anterior compt.) superficial msucles) which artery is located just lateral to the flexor carpi radialis?
    radial artery
  20. anterior compt.) superficial msucles) flexor carpi radialis- actign with other felxors..
    helps to flex the wrist
  21. anterior compt.) superficial msucles) flexor carpi radialis- acting alone or with extensors...
    will abduct the wrist
  22. anterior compt.) superficial msucles) can plamaris longus be seen in all of the population?
    • no,
    • *absent in 15% of people
  23. anterior compt.) superficial msucles) palmaris longus- origin
    medial epicondyle
  24. anterior compt.) superficial msucles) palmaris longus- inserts?
    via the palmar aponeurosis
  25. anterior compt.) superficial msucles) palmaris longus- innervated?
    median nerve
  26. anterior compt.) superficial msucles) palmaris longus- action? (2)
    • -flexes the wrist
    • *little effect on flexing the wrist

    -tenses the palm
  27. anterior compt.) superficial msucles) palmaris longus lies superficial to what muscle?
    flexor digitorium superficalis
  28. anterior compt.) superficial msucles) which is the most emdial of the superficial flexors?
    flexor carpi ulnaris
  29. anterior compt.) superficial msucles) flexor carpi ulnaris- innervated?
    ulnar nerve
  30. anterior compt.) superficial msucles) flexor carpi ulnaris- orgin
    • medial epicondyle
    • *some origin off the olecranon
  31. anterior compt.) superficial msucles) flexor carpi ulnaris- inserts (3)
    -pisiform bone

    -hamate bone

    -base of the 5th metacarpel
  32. anterior compt.) superficial msucles) FLEXOR carpi ulnaris- innervated?
    ulnar nerve
  33. anterior compt.) superficial msucles) flexor carpi ulanris- actions? (2)
    -flexes the wrist

    -adducts the hand
  34. between whcih 2 structures does ulnar nerve lie?
    palmaris longus and carpi ulnaris
  35. anterior compt.) superficial msucles) felxor carpi ulnaris- whenacting with other flexors?
    flexes teh wrist
  36. anterior compt.) superficial msucles) flexor carpi ulnaris- when acting with extensors..
    adducts the wrist
  37. anterior compt.) superficial msucles) flexor digitorium superficialis- origins (3)
    -medial epicondyle of humerus

    -coronoid process of the ulan

    • -upper half of the radius
    • *shaft

    ***has wider origin because it is wider than others
  38. anterior compt.) superficial msucles) flexor digitorium superficialis- inserts
    • middel phalanx of each of the 4 tendons by plitting
    • *not the thumb
  39. anterior compt.) superficial msucles) flexor digitorium superficialis- innervated?
    median nerve
  40. anterior compt.) superficial msucles) flexor digitorium superficialis- action? (2)
    -flexes wrist

    -middle phalanges of fingers
  41. anterior compt.) superficial msucles) flexor digitorium superficialis- what happens at the wrist?
    it divides into 4 tendons for each fingers except the thumbg
  42. anterior compt.) superficial msucles) flexor digitorium superficialis- what do the tendons ath the middle phalanx allow>?
    the tendons of the flexor digitorium profundus to pass through
  43. anterior compt.) superficial msucles) which is the largest superficial msucle?
    flexor digitorium superficialis
  44. anterior compt.) superficial msucles) what msucle does the median nerve lie deep to?
    flexor digitorium superficialis
  45. anterior compt.) deep msucles) which are the 3 deep muscles of anterior forearm?
    -flexor pollicis longus

    -flexor digitorium profundus

    -pronator quadratus
  46. anterior compt.) deep msucles) do these msucles assist in elbow joint?
    no bc they do not cross the elbow joint
  47. anterior compt.) deep msucles) flexor poillics longus- origin (2)
    -anterior surface of the radius and interserrousous membrane
  48. anterior compt.) deep msucles) flexor pollicis longus- inserts
    into the distal phalanx of the thumb
  49. anterior compt.) deep msucles) flexor pollicis longus- innervated?
    median nerve
  50. anterior compt.) deep msucles) flexor pollicits longus- action?
    flexes the distal phalanx of thumb
  51. what does pollex mean?
    thumb
  52. anterior compt.) deep msucles) which is the only muscle to flex the interphallengeal joint of thumb?
    flexor pollicis longus
  53. anterior compt.) deep msucles) felxor digitorium profundus- origin (3)
    -coronoid process

    -anteromedial surface of ulna

    -interserrouseous membrane
  54. anterior compt.) deep msucles) felxor digitorium profundus- inserttion?
    distal phalanx of 4 fingers
  55. anterior compt.) deep msucles) flexor digitorium profundus-lateral side innervated?
    median nerve
  56. anterior compt.) deep msucles) felxor digitorium profundus- medial side innervted?
    ulnar nerve
  57. anterior compt.) deep msucles) felxor digitorium profundus-description
    divides into 4 tendons to each of the fingers, they pass through the split of flexor digitorium superficialis to reach the distal phalanx
  58. anterior compt.) deep msucles) felxor digitorium profundus- action>?
    flexes distal interphallangeal joints
  59. anterior compt.) deep msucles) pronator quadratus- description
    squaare shaped msucle located just above the wrist
  60. anterior compt.) deep msucles) pronator quadratus- origin
    distal portion of the anterior surface of the ulna
  61. anterior compt.) deep msucles) pronator quadratus- inserts
    into the distal protion of the radius
  62. anterior compt.) deep msucles) pronator quadratus- what is it innervated by?
    median nerve
  63. anterior compt.) deep msucles) pronator quadratus-action?
    principal pronator
  64. anterior compt.) deep msucles) if pronator quadratus and pronator teres combine to pronate, whats end result>?
    more speed and ppower
  65. what is carpal tunnel?
    passge formed by the carperl bones and teh flexor retinaculum
  66. what 2 structures pass through the carpal tunnel?
    -long flexor tendons to the digits and thumb

    -median nerve
  67. what do all the tendons that pass through the carpel tunnel contain?
    • enclosed synovial tendon sheaths
    • *to reduce friction
  68. which is the most superficial structure to pass through the carpel tunnel?
    median nerve
  69. does ulnar nerve pass through the carpel tunnel?
    no
Author
efrain12
ID
239495
Card Set
2.5
Description
msucles of anterior forearm
Updated

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