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3D - Abductor digiti minimi - hand

Extensor digiti minimi

Extensor digiti minimi

Pronunciation

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Other Terms:
Musculus extensor digiti minimi, Muscle extenseur du petit doigt


Muscle parts
None
Latin name
Musculus extensor digiti minimi
Latin muscle parts
None
Group
Antebrachial muscle – posterior compartment – lateral group
Etymology
In English this muscle’s name is the muscle that straightens the little finger. The word extensor comes from the Latin ex meaning “out from” and tendere meaning “to stretch.” The term digiti is from the Latin digitus, which originally meant the “pointing thing,” a term that is similar to the Sanskrit word “dic” meaning to show or point out. Because we point with our fingers the term was applied to the fingers and then the toes. The term minimus is Latin for “least or smallest.” Its use in this instance is in reference to the fact that the muscle attaches to the smallest finger of the hand.
Origin
Lateral epicondyle of humerus via a thin tendinous slip to common extensor tendon
Insertion
Tendon divides into two distally and both tendons join the extensor expansion of the little finger with the extensor digitorum
Action
Extension of all the joints of the little finger and assists wrist extensors
Nerve supply
Radial nerve (C7 and C8)
Blood supply
From proximal to distal, the belly of the muscle receives blood from the posterior interosseous artery and its recurrent interosseous branch and the perforating part of the anterior interosseous artery. The distal tendons of the muscle are supplied by branches from the dorsal carpal arch, dorsal metacarpal arteries, and dorsal digital arteries.
Latin
Musculus extensor digiti minimi
French
Muscle extenseur du petit doigt

Structural Label Key

  1. Abductor digiti minimi on the hand
  2. Abductor pollicis longus
  3. Anterior antebrachial muscles
  4. Bones of the hand
  5. Capitate
  6. Carpometacarpal joints
  7. Collateral interphalangeal ligaments
  8. Collateral metacarpophalangeal ligaments
  9. Common flexor sheath of upper limb
  10. Deep group of the ant. antebrachium
  11. Distal phalanges - hand
  12. Dorsal carpometacarpal ligaments
  13. Dorsal intercarpal ligaments
  14. Dorsal metacarpal ligaments
  15. Dorsal radiocarpal ligament
  16. Dorsal ulnocarpal ligament
  17. Extensor carpi radialis longus
  18. Extensor carpi ulnaris
  19. Extensor digiti minimi
  20. Extensor digitorum
  21. Extensor expansions of hand
  22. Extensor indicis
  23. Extensor pollicis brevis
  24. Extensor pollicis longus
  25. Extensor retinaculum
  26. Fibrous sheaths of digits of hand
  27. Flexor carpi radialis
  28. Flexor digitorum profundus
  29. Flexor digitorum superficialis
  30. Flexor pollicis longus
  31. Flexor retinaculum of wrist
  32. Groove for sigmoid sinus
  33. Hamate
  34. Hand muscles
  35. Hypothenar muscles
  36. Intermetacarpal joints
  37. Intermetacarpal muscles
  38. Interosseous intercarpal ligaments
  39. Interosseous membrane of forearm
  40. Interosseous metacarpal ligaments
  41. Interphalangeal joints of hand
  42. Joints and ligaments of the carpal bones
  43. Joints and ligaments of the radius and ulna
  44. Lateral group of the post. antebrachium
  45. Lunate
  46. Metacarpal 1
  47. Metacarpal 2
  48. Metacarpal 3
  49. Metacarpal 4
  50. Metacarpal 5
  51. Metacarpophalangeal joints
  52. Middle phalanges - hand
  53. Muscles - developmental approach
  54. Palmar carpometacarpal ligaments
  55. Palmar intercarpal ligaments
  56. Palmar interphalangeal ligaments
  57. Palmar metacarpal ligaments
  58. Palmar metacarpophalangeal ligaments
  59. Palmar radiocarpal ligament
  60. Palmar ulnocarpal ligament
  61. Palmaris longus
  62. Pisiform
  63. Pisiform joint
  64. Pisohamate ligament
  65. Pisometacarpal ligament
  66. Posterior antebrachial muscles
  67. Proximal phalanges - hand
  68. Radial collateral ligament of the wrist joint
  69. Radial group of the post. antebrachium
  70. Radiate carpal ligament
  71. Radius
  72. Scaphoid
  73. Skull
  74. Superficial flexor retinaculum
  75. Superficial group of the ant. antebrachium
  76. Temporal
  77. Tendon sheath of abductor pollicis longus and extensor pollicis brevis
  78. Tendon sheath of extensor carpi radialis longus an...
  79. Tendon sheath of extensor carpi ulnaris
  80. Tendon sheath of extensor digiti minimi
  81. Tendon sheath of extensor digitorum and extensor i...
  82. Tendon sheath of extensor pollicis longus
  83. Tendon sheath of flexor carpi radialis
  84. Tendon sheath of flexor pollicis longus
  85. Tendon sheaths of digits of hand
  86. Thenar muscles
  87. Trapezium
  88. Trapezoid
  89. Triquetral
  90. Ulna
  91. Ulnar collateral ligament of the wrist joint
  92. Upper limb - bones of
  93. Upper limb muscles
  94. Wrist joint and ligaments