Skeleton of the upper limb

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Author:
harpa15
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248075
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Skeleton of the upper limb
Updated:
2013-12-10 03:16:08
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anatomy
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Description:
upper limb skeleton
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  1. Pectoral girdle consists of...
    Scapula + Clavicle
  2. Free limb of the upper limb
    • Humerus
    • Ulna
    • Radius
    • Carpal bones
    • Metacarpal bones
    • Phalanges
  3. Dorsal surface of the scapula is divided by the....
    Scapular spine into supraspinous fossa and infraspinous fossa
  4. Surfaces of scapula
    Costal + Dorsal
  5. Angles of scapula
    Superior + inferior + Lateral
  6. Borders of scapula
    Superior + Medial + Lateral
  7. Slightly hollow surface of scapula
    Costal surface of scapula
  8. Scapular spine
    • *Divides the dorsal surface of scapula into supraspinous fossa and infraspinous fossa. 
    • *Continues into ACROMNION
  9. Glenoid fossa
    On the lateral angle of scapula. Articular surface.
  10. Supraglenoid tubercle
    Lies above glenoid fossa on the lateral angle of scapula
  11. Infraglenoid fossa
    lies below glenoid fossa on lateral angle of scapula
  12. corocoid process
    projects forwards and laterally from lateral angle of scapula
  13. Scapular notch
    separates corocoid process from superior border
  14. What structure on the lateral angle separates the coracoid process from the superior border (scapula)
    Scapular notch
  15. Structure of clavicle
    • Shaft
    • Acromial end
    • Sternal end
  16. Convexity of clavicle shaft
    • 2/3 medially convex forwards
    • 1/2 laterally convex backwards
  17. Acromial end of clavicular shaft
    Flat and joins with acromion
  18. Sternal end of clavivle
    Is enlarged and joins with sternum
  19. Impression for costoclavicular ligament: Bone, structure, surface
    Medially on inferior surface of the shaft of clavicle
  20. Groove for subclavius muscle: Bone, structure, surface
    In the middle on inferior surface of the shaft of clavicle.
  21. Tuberosity of coracoclavicular ligament: Bone, structure, surface
    Laterally on inferior surface of the shaft of the clavicle
  22. Structures on proximal end of humerus
    • Head
    • Anatomical neck
    • Lesser tubercle
    • Greater tubercle
    • Intertubercular sulcus
    • Crest of greater tubercle
    • crest of lesser tubercle
    • Surgical neck
  23. What separates greater and lesser tubercles on proximal end of humerus
    Intertubercular sulcus
  24. Intertubercular sulcus is bordered distally by
    Crest of greater tubercle + Crest of lesser tubercle
  25. Structures on shaft of humerus
    • Deltoid tuberosity 
    • Groove for radial nerve
  26. Deltoid tuberosity: Bone, structure, surface
    Lateral side of shaft of humerus
  27. Groove for radial nerve: Bone, structure, surface
    Dorsal surface of shaft of humerus
  28. Structures on distal end of humerus
    • Medial condyle
    • Lateral condyle
    • Medial and lateral epicondyles
    • Medial and lateral supracondylar crests
    • Groove for ulnar nerve
    • Coronoid fossa
    • Radial fossa
    • Olecranon fossa
  29. Groove for ulnar nerve: Bone, structure, surface
    Lies between medial epicondyle and trochlea on distal end of humerus
  30. Coronoid fossa: Bone, structure, surface
    Above trochlea ventrally on distal end of humerus
  31. Radial fossa: Bone, structure, surface
    Above capitulum ventrally in distal end of humerus
  32. Olecranon fossa
    Above trochlea dorsally on distal end of humerus
  33. Structures on proximal end of ulna
    • Olecranon
    • Coronoid process
    • Trochlear notch
    • Ulnar tuberosity
  34. Olecranon
    Projects upwards and is bent forwards. Proximal end of ulna.
  35. Coronoid process
    • Projects forwards. Radial notch lies below it laterally. 
    • Proximal end of ulna.
  36. Trochlear notch
    Between olecranon and coronoid process. Joins with humeral trochlea. Proximal end of ulna.
  37. Ulnar tuberosity
    Below coronoid process (for insertion of brachialis muscle). Proximal end of ulna.
  38. Section of ulnar shaft
    triangular
  39. Structures of shaft of ulna
    • Interosseous border
    • Posterior border
    • Supinator crest
  40. Supinator crest
    Shaft of Ulna. Descends from radial notch obliquely to posterior border.
  41. Structures on distal end of ulna
    • Ulnar head
    • Articular circumference
    • Styloid process
  42. Articular circumferene
    On ulnar head on distal end of ulna
  43. Ulnar head
    Distal end of ulna. Projects distally into styloid process.
  44. Proximal end of radius
    • Head
    • Neck 
    • Tuberosity
  45. Head of proximal end of radius
    • *Is diskoid
    • *Proximal surface is concave (joins with humeral capitulum)
  46. Tuberosity of proximal end of radius
    *Is directed ventromedially (gives insertion for biceps brachii muscle)
  47. Shaft of radius
    • *Triangular in section
    • *Has interosseous border- oriented to the ulna
  48. Distal end of radius
    • *Is the widest part. Projects in STYLOID PROCESS
    • *Bears articular surface for ulnar head called ULNAR NOTCH (is oriented medially)
    • *Bears CARPAL ARTICULAR SURFACE for carpal bones (is oriented distally)
    • *Ventral surface of distal end is smooth
    • *Dorsal surface is grooves (for tendons of extensors)
  49. Proximal row of carpal bones
    • (lateral -> medial):
    • SCAPOID
    • LUNATE
    • TRIQUETRAL
    • PISIFORME
  50. Distal row of carpal bones
    • (lateral -> medial):
    • TRAPEZIUM
    • TRAPEZOID
    • CAPITATE
    • HAMATE
  51. Head of metacarpal bones
    Rounded. Joins with base of proximal phalanx
  52. Proximal phalanx
    • Its base bears concave articular surface for the head of metacarpal bone
    • Head is pulley-shaped
  53. Middle phalanx
    • Its base bears articular facet conforming the pulley-shaped head of proximal phalanx
    • The head is pulley-shaped
  54. Distal Phalanx
    • Its base bears articular facet conforming the pulley-shapes head of middle phalanx
    • The head has palmar tuberosity

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