anatomy part 3

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anatomy part 3
2013-09-14 22:18:45
anatomy part

anatomy part 3
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  1. what serves as major muscle attachments?
  2. what accommodates ulnar olecranon in extension?
    olecranon fossa
  3. radius and ulnar are held together by:
    • interosseous membrane
    • which "reduces translation btwn the 2 bones" & are also held together by proximal & distal radioulnar joint
  4. what inserts on the coronoid process?
    • brachialis tendon
    • occasionally the flexor pollicus longus
  5. tricep tendon attaches to:
  6. attachment of the brachialis tendon:
    ulnar tuberosity
  7. head of radius articulates on:
    radial notch
  8. the end of the head of the radius articulates with the:
    the rounded part of the head articulates c/:
    • capitulum
    • ulna & partly c/ the ligaments that surround it
  9. what attaches the distal radioulnar joint to the radius and ulnar styloid?
    triangular cartilage
  10. during movement assoc with supination & pronation of the hand, the _____________ rides around the ___________ with the _______ providing the pivot point.
    • distal head of the radius
    • head of the ulna
    • ulnar styloid
  11. wrist joint is made of what 2 joints?
    what are their functions?
    • radiocarpal joint: radial & ulnar deviation
    • mid carpel joint

    both: flexion & extension of the wrist
  12. what are the 8 carpel bones in order?
    • trapezium
    • trapezoid
    • capitate
    • hamate
    • scaphoid
    • lunate
    • triquetral
    • pisiform
  13. what are the 3 ligaments of the wrist?
    • radial collateral ligament
    • anular ligament
    • ulnar collateral ligament
  14. which ligaments of the wrist are laterally placed?
    what do they do?
    • radial collateral ligament
    • anular ligament

    holds the radial side of the elbow together
  15. what muscle arises from the radial collateral ligament?
  16. radial collateral ligament attaches from the:
    lateral epicondyle & "fans out" continuous c/ the anular ligament
  17. anular ligament conforms entirely to the:
    radial head so that the radius, although ALLOWED to rotate, is completely limited otherwise
  18. the ulnar collateral ligament arises from:
    the medial epicondyle "fanning out" in a triangle attaching to the ulna all along the medial side of the trochlear notch
  19. is the joint capsule of the elbow stable or not stable?
    • (ligaments & bony articulation)
  20. what joints are referred to as 1 joint (elbow joint) bc they are located in the same anatomical region & not entirely separated structurally?
    • Humeral ulnar joint
    • proximal radioulnar joint
  21. what 2 joints are close together but are physically separated?
    • distal radioulnar joint
    • wrist joint
  22. describe the appearance of the elbow joint:
    • relatively loose, thin, & baggy ant & post
    • this allows FROM
  23. what is a difference btwn the elbow joint and the wrist joint?
    • elbow stability is related to osseous structures
    • wrist is stabilized & held together ENTIRELY by ligaments
  24. the capsule of the wrist joint is strong & represented on the extensor aspect as the _________ & on the flexor aspect, it forms the:
    • Dorsal radiocarpal ligament
    • Palmar radiocarpal ligament
  25. collateral ligaments hold bones together in:
    radial & ulnar deviation
  26. radiocarpal ligaments hold bones together in:
    flexion & extension
  27. 3 flexor muscles of the forearm:

    *note: all of these muscles funct: is flex the forearm. and a little supination
    • brachialis
    • biceps brachii
    • brachioradialis
  28. attachment of brachialis:
    arising from broad area on the ant humerus & is inserted onto ulnar tuberosity
  29. attachment of bicep brachii-
       long head:
       short head:
    on its lateral edge, the tendon fans out medially into a thin sheet of fascia called ________ which is continuous c/ deep fascia that surrounds the forearm
    • long: travels thru bicipital groove to supraglenoid process
    • short: arises from coracoid process
    • they merge distally forming "2 part tendon"
    • inserts on radial tuberosity
    • Bicipital aponeurosis
  30. attachment of the brachioradialis:
    arises half way up the humerus to insert on the distal radius
  31. the extensor of the forearm:
  32. attachments of the 3 heads of the triceps:
    • long: infraglenoid tubercle
    • lateral: high up on the lateral side of the posterior humerus
    • medial: a broad area lower down & more medially
  33. what are the forearm rotators:
    the pronators & supinators
    • pronator teres
    • pronator quadratus
    • supinator
    • bicep brachii (as a supinator)
  34. attachment of the pronator teres:
    • medial epicondyle & ulnar
    • inserts 1/2 way down on the lateral surface of the radius
  35. what nerve passes thru btwn 2 heads of the pronator teres?
    medial nerve
  36. attachment of the pronator quadratus:
    • arises from anteriomedial aspect of the ulna
    • inserts on anterior surface of the radius
  37. attachment of the supinator:
    • arises from lateral epicondyle & radiocollateral ligament, anular ligament, & supinator crest of the ulna
    • inserts on radius on a line just above pronator teres
  38. what nerve runs thru the supinator muscle?
    a deep branch of the radial nerve
  39. what muscle is a direct antagonist of the supinator muscle?
    pronator teres
  40. attachment of the bicep brachii:
    radial tuberosity