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Anatomy-Hands_Wrist

Jerrick Gencianeo Anatomy Hard English 102 cards

Cards in this deck (102)

  1. 1anterior concavity of the carpusCarpal groove
  2. 2converted into an osseoufibrous carpal tunnel by the flexor retinaculum, which is attached to the scaphoid and trapezium laterally and to the pisiform and hook of the hamate bone mediallyCarpal groove
  3. 3due to compression of the median nerve in the carpal tunnelCarpal Tunnel Syndrome
  4. 4transverse band on the posterior part of the wrist formed from the thickened antebrachial fasciaExtensor retinaculum
  5. 5- retains the extensor tendons in position, thereby increasing their efficiencyExtensor retinaculum
  6. 6thickened deep fascia anteriorly - converts the anterior concavity of the carpus into a carpal tunnel through which the flexor tendons passFlexor retinaculum
  7. 7- continuous proximally with the antebrachial fascia and at the borders of the palm with the fascia on the dorsum of the hand - thin over the thenar and hypothenar eminencesFascia of the Palm
  8. 8- thick in the palm where it forms the palmar aponeurosis and in the digits where it forms the fibrous digital sheathsFascia of the Palm
  9. 9- strong, well-defined triangular part of the deep fascia of the hand - covers the soft tissues and overlies the long flexor tendons of the palmPalmar Aponeurosis
  10. 10proximal end continuous with the flexor retinaculum and palmaris longus tendon - distal end divides at the roots of the digits into 4 longitudinal bands - each band attached to the base of the proximal phalanx and is fused with the fibrous digital sheathsPalmar Aponeurosis
  11. 11Surgically important - Spaces bounded medially and laterally by fibrous septaPalmar Spaces
  12. 12from the medial border of the palmar aponeurosis to the 5th metacarpal bonemedial septum
  13. 13– from the lateral border of the palmar aponeurosis to the 1st metacarpal bonelateral septum
  14. 14medial to the medial septum, containing the hypothenar musclesHypothenar compartment
  15. 15lateral to the lateral septum containing the thenar musclesThenar compartment
  16. 16between the thenar and hypothenar compartments, containing the flexor tendons and their sheaths, the superficial palmar arch, and branches of the median and ulnar nervesCentral compartment
  17. 17- deepest muscular plane of the palm, contains the adductor pollicis muscleAdductor compartment
  18. 18– medial and lateral - created by a fibrous septum passing obliquely and posteriorly from the lateral border of the palmar aponeurosis to the 3rd metacarpal boneMidpalmar space
  19. 19– between the adductor pollicis and the 1st dorsal interosseous muscleRetroadductor space
  20. 20are on the palmar aspect and are innervated by the ulnar and median nervesintrinsic muscles of the hand
  21. 21chiefly responsible for the movement of the thumb known as oppositionThenar Muscles
  22. 22Thenar Musclesabductor pollicis brevis
    flexor pollicis brevis
    opponens pollicis
    adductor pollicis
  23. 23forms the anterolateral part of the thenar eminenceabductor pollicis
  24. 24Origin of abductor pollicis brevisflexor retinaculum and tubercles of scaphoid and
    trapezium
  25. 25Insertion of abductor pollicis brevislateral side of base of proximal phalanx of thumb
  26. 26Action of abductor pollicis brevisabducts thumb and helps oppose it
  27. 27Nerve Supply, Nerve Roots and Blood Supply of abductor pollicis brevisMedian Nerve - C8, T1 - Superficial palmar branch of radial artery
  28. 28medial to the abductor pollicis brevisflexor pollicis brevis
  29. 29Origin of flexor pollicis brevisflexor retinaculum and tubercle of trapezium
  30. 30Insertion of flexor pollicis brevislateral side of base of proximal phalanx of thumb
  31. 31Action of flexor pollicis brevisflexes thumb
  32. 32Nerve Supply, Nerve Roots and Blood Supply of flexor pollicis brevisMedian Nerve - C8, T1 - Superficial palmar branch of radial artery
  33. 33lies deep to the abductor pollicis brevis and lateral to the flexor pollicis brevisopponens pollicis
  34. 34Origin of opponens pollicisflexor retinaculum and tubercle of trapezium
  35. 35Insertion of opponens pollicislateral side of 1st metacarpal bone
  36. 36Action of opponens pollicisopposes thumb toward center of palm and rotates it
    medially
  37. 37Nerve Supply, Nerve Roots and Blood Supply of opponens pollicisMedian Nerve - C8, T1 - Superficial palmar branch of radial artery
  38. 38has 2 heads that are separated by a gap through which the radial artery passesadductor pollicis
  39. 39Origin of adductor pollicis (oblique head)– bases of 2nd and 3rd metacarpals, capitate,
    and adjacent carpal bones
  40. 40Origin of adductor pollicis (transverse head)anterior surface of body of 3rd metacarpal
    bone
  41. 41Insertion of adductor pollicismedial side of base of proximal phalanx of thumb
  42. 42Action of adductor pollicisadducts thumb towards middle digit
  43. 43Nerve Supply, Nerve Roots and Blood Supply of adductor pollicisDeep branch of ulnar nerve - C8,T1 - Deep palmar arch
  44. 44- concerned with movements of the 5th digit - produce the hypothenar eminence or the ball of the 5th digitHypothenar Muscles
  45. 45Hypothenar Musclesabductor digiti minimi
    flexor digiti minimi
    opponens digiti minimi
    palmaris brevis
  46. 46most superficial of the 3 hypothenar muscles forming the hypothenar eminenceabductor digiti minimi
  47. 47Origin of abductor digiti minimipisiform bone
  48. 48Insertion of abductor digiti minimimedial side of base of proximal phalanx of 5th digit
  49. 49Action of abductor digiti minimiabducts digit 5
  50. 50Nerve Supply, Nerve Roots and Blood Supply of abductor digiti minimiDeep branch of Ulnar Nerve - C8,T1 - Deep palmar branch of ulnar artery
  51. 51lateral to the abductor digiti minimiflexor digiti minimi
  52. 52Origin of flexor digiti minimihook of hamate and flexor retinaculum
  53. 53Insertion of digiti minimimedial side of base of proximal phalanx of digit 5
  54. 54Action of flexor digiti minimiflexes proximal phalanx of digit 5
  55. 55Nerve Supply, Nerve Roots and Blood Supply of flexor digiti minimiDeep branch of Ulnar Nerve - C8,T1 - Deep palmar branch of ulnar artery
  56. 56- lies deep to the abductor and flexor muscles of the 5th digitopponens digiti minimi
  57. 57Origin of opponens digiti minimihook of hamate and flexor retinaculum
  58. 58Insertion of opponens digiti minimimedial border of 5th metacarpal bone
  59. 59Action of opponens digiti minimidraws 5th metacarpal bone anteriorly and rotates it, bringing
    digit 5 into opposition with thumb
  60. 60Nerve Supply, Nerve Roots and Blood Supply of opponens digiti minimiDeep branch of Ulnar Nerve - C8,T1 - Deep palmar branch of ulnar artery
  61. 61lies in the fascia deep to the skin of the hypothenar eminence - a relatively unimportant muscle except that it covers and protects the ulnar nerve and arterypalmar brevis
  62. 62Origin of palmar brevisflexor retinaculum and palmar aponeurosis
  63. 63Insertion of palmar brevisskin on the medial side of the palm
  64. 64Action of palmar breviswrinkles the skin on the medial side of the palm and
    deepens the hollow of the palm, as in cupping of the hand, thereby
    aiding the grip
  65. 65- named as such because of their elongated wormlike formLumbrical Muscles
  66. 66Origin of Lumbrical Muscleslateral 2 tendons of flexor digitorum profundus
  67. 67Insertion of Lumbricals 1 and 2Lateral side of extensor expansion of digits 2 andd 3
  68. 68Action of Lumbricals 1 and 2flex digits at MCP joints and extend IP joints
  69. 69Nerve Supply, Nerve Roots and Blood Supply of Lumbricals 1 and 2Digital branches of median nerve - C8,T1 - Superficial and deep palmar arches
  70. 70Origin of Lumbricals 3 and 4medial 3 tendons of flexor digitorum profundus
  71. 71Insertion of Lumbricals 3 and 4lateral sides of extensor expansions of digits 2 to 5
  72. 72Action of Lumbricals 3 and 4flex digits at MCP joints and extend IP joints
  73. 73Nerve Supply, Nerve Roots and Blood Supply of Lumbricals 3 and 4Deep branches of median nerve - C8,T1 - Superficial and deep palmar arches
  74. 74- located between the metacarpal bones - arranged in 2 layers: 3 palmar and 4 dorsal - located between bonesInterosseous Muscles
  75. 75Interosseous Musclesdorsal interossei 1 to 4
    palmar interossei 1 to 3
  76. 76Origin of palmar interossei 1 to 3adjacent sides of 2 metacarpal bones
  77. 77Insertion of dorsal interossei 1 to 4extensor expansions and bases of proximal phalanges of
    digit 2 to 4
  78. 78Action of dorsal interossei 1 to 4abducts digits and assist lumbricals
  79. 79Nerve Supply, Nerve Roots and Blood Supply of dorsal interossei 1 to 4Deep branch of Ulnar Nerve - C8,T1 - Deep palmar arch
  80. 80Origin of palmar interossei 1 to 3palmar surfaces of 2nd, 4th and 5th metacarpal bones
  81. 81Insertion of palmar interossei 1 to 3extensor expansion of digits and bases of proximal
    phalanges of digits 2, 4, and 5
  82. 82Nerve Supply, Nerve Roots and Blood Supply of palmar interossei 1 to 3Deep branch of Ulnar Nerve - C8,T1 - Deep palmar arch
  83. 83Nervesmedian, ulnar and radial nerves supply the hand
  84. 84- enters the hand through the carpal tunnel - supplies motor fibers to the 3 thenar muscles and the 1st and 2nd lumbricalsMedian Nerve
  85. 85sends cutaneous sensory fibers to the lateral palmar surface, the sides of the first 3 digits, the lateral half of the 4th digit, and the dorsum of the distal halves of these digitsMedian Nerve
  86. 86caused by any lesion that significantly reduces the size of the carpal tunnel (e.g. inflammation of the flexor retinaculum), resulting to compression of the median nerveCarpal tunnel syndrome
  87. 87- leaves the forearm by emerging from deep to the tendon of the flexor carpi ulnaris - passes alongisde the lateral border of the pisiform bone and goes with the ulnar artery on its lateral sideUlnar Nerve
  88. 88- ulnar artery and nerve are bridged over by a slender band of connective tissue, which forms a small tunnel (canal of Guyon)Ulnar Nerve
  89. 89Ulnar Nerve Branches At the distal border of the flexor retinaculum, the ulnar nerve ends by dividing into a superficial and deep branchpalmar cutaneous branch
    dorsal cutaneous branch
    superficial branch
    deep branch
  90. 90- arises just proximal to the wrist - passes superficial to the flexor retinaculum and to the palmar aponeurosis - supplies skin of the medial side of the palmpalmar cutaneous branch
  91. 91supplies cutaneous fibers to the anterior surfaces of the medial 1 ½ digitssuperficial branch
  92. 92supplies motor fibers to the hypothenar muscles, the medial 2 lumbricals, the adductor pollicis and all the interosseous muscles - also supplies several joints (wrist, intercarpal, carpometacarpal and intermetacarpal)deep branch
  93. 93Referred to as the nerve of fine movements – innervates muscles that are concerned with fine movementsdeep branch
  94. 94supplies no hand muscles - deep branch is muscular and articular in distribution - superficial branch is the direct continuation of the radial nerve along the anterolateral side of the forearm and is entirely sensoryRadial Nerve
  95. 95pierces the deep fascia near the dorsum of the wrist and supplies the skin and fascia over the lateral 2/3 of the dorsum of the hand, the dorsum of the thumb, and proximal parts of the lateral 1 ½ digitsRadial Nerve
  96. 96- due to radial nerve injury producing paralysis of the extensor muscles of the forearm - hand is flexed at the wrist and lies flaccid - digits are also flexed at the MCP jointsWrist drop
  97. 97Radial and ulnar arteries and their branches provide all the blood to the handArteries
  98. 98- smaller of the 2 terminal branches of the brachial arteryRadial Artery
  99. 99Radial Artery branch1. superficial palmar branch → superficial palmar arterial arch
    2. princeps pollicis artery – supplies the thumb
  100. 100Radial Artery branch3. radialis indicis – supplies lateral side of digit 2
    4. deep palmar arterial arch – formed mainly by the radial artery
    which joins the deep branch of the ulnar artery
  101. 101arise from the deep palmar arch - run distally and join the commonpalmar metacarpal arteries
  102. 102arise from the superficial palmar arterial archpalmar digital arteries

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Hard Anatomy Flashcards on Anatomy-Hands_Wrist, created by Jerrick Gencianeo on 25/10/2020.
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