elbow muscles

Card Set Information

elbow muscles
2011-03-23 13:45:33
MSA1 elbow muscles Soma

Muscles that move the elbow
Show Answers:

  1. Origin and Insertion of Biceps Brachii
    • Origin- (Short head) coracoid process of the scapula; (Long head) supraglenoid tubercle
    • Insertion- Radial tuberosity; Bicipital aponeurosis
  2. Action, R/NR and D/S of Biceps Brachii
    • Action- flexes the elbow; supinates the forearm; flexes the shoulder
    • Ropy
    • Primarily superficial- small bit deep to anterior deltoid
  3. Origin and Insertion of Brachialis
    • The true flexor of the elbow
    • Origin- Distal half of anterior humerus
    • Insertion- Radial tuberosity; coranoid process of ulna
  4. Action, R/NR and D/S of Brachialis
    • Action- flexes the elbow
    • Non-ropy
    • Both deep and superficial
  5. Origin and Insertion of Triceps Brachii
    • Origin- (Long head) Infraglenoid tubercle of the scapula; (Lateral head) posterior surface of proximal half of humerus; (Medial head) posterior surface of distal half of humerus
    • Insertion- Olecrenon process of the ulna
  6. Action, R/NR and D/S of Triceps Brachii
    • All heads extend the elbow
    • Long head- extends and adducts the shoulder
    • Ropy
    • Deep to itself
    • Both- medial head deep to others
  7. Origin and Insertion of Brachioradialis
    • The popeye muscle
    • Origin- Lateral supracondylar ridge of the humerus
    • Insertion- Radial styloid process; does not cross radius
  8. Action, R/NR and D/S of Brachioradialis
    • Flexes the elbow
    • Assists resisted supination and pronation of the forearm (turning screwdriver)
    • Ropy
    • Superficial
  9. Origin and Insertion of Pronator Teres
    • Make a gun, put against medial epicondyle
    • Origin- Medial epicondyle of the humerus (common flexor tendon); coranoid process of ulna
    • Insertion- Mid-lateral shaft of radius
  10. Action, R/NR and D/S of Pronator Teres
    • Action- Pronation of forearm; flexes the elbow
    • Nonropy
    • Both- deep to brachioradialis
  11. Origin and insertion of Supinator
    • Wraps around ulna at supinator crest
    • Origin- Lateral epicondyle of the humerus; supinator crest of ulna; annular ligament (covers head of radius) radial collateral ligament
    • Insertion- Anterior, lateral surface of proximal 1/3 of radial shaft
  12. Action, R/NR and D/S of Supinator
    • Action- supinates the forearm
    • Nonropy
    • Deep