Medical school week 2 (arm)

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Author:
gurpleguy
ID:
281698
Filename:
Medical school week 2 (arm)
Updated:
2014-08-30 20:17:20
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medical school
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2nd week
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  1. axilla (apex)
    1st rib, scapula, and clavicle
  2. axilla (anterior wall)
    pectoralis major, pectoralis minor, clavipectoral fascia
  3. axilla (posterior border)
    subscapularis, teres major, latissimus dorsi
  4. axilla (medial wall)
    serratus anterior, upper rubs
  5. axilla (lateral wall)
    intertubercular groove
  6. axilla (base or outlet)
    axillary fascia
  7. first part of axillary artery
    • medial to pectoral minor
    • superior (supreme) thoracic artery
  8. second part of the axillary artery
    • thoracoacromial trunk (clavicular, deltoid, pectoral, acromial branches)
    • Lateral thoracic artery
  9. third part of the axillary artery
    • posterior circumflex humeral artery
    • anterior circumflex humeral artery
    • subscapular artery (circumflex scapulary artery, thoracodorsal artery)
  10. coracobrachialis
    • origin- coracoid process of the scapula
    • insertion- medial aspect of the humerus, mid-shaft
    • innervation- musculocutaneous nerve (C5-C6, C7)
    • action- flexion at the shoulder joint
  11. Biceps brachii (long and short head)
    • origin- supraglenoid tubercle, coracoid process of the scapula
    • insertion- radial tuberosity
    • innervation- musculocutaneous (C5-C6, C7*)
    • action- flexion at the elbow joing, flexion at the shoulder joint, supination
  12. brachialis
    • origin- anterior aspect of the humerus, lower 1/2
    • insertion- ulnar tuberosity
    • innervation- musculocutaneous nerve (C5-C6, C7*)
    • action- flexion at the elbow joint
  13. triceps brachii (long head)
    • origin- infraglenoid tubercle
    • insertion- olecranon of the ulna
    • innervation- radial nerve (C5-T1)
    • action- extension at the shoulder joint, extension at the elbow joint
  14. triceps brachii (lateral head)
    • origin- posterior humerus lateral and superior to the radial groove
    • insertion- olecranon of the ulna
    • innervation-┬áradial nerve (C5-T1)
    • action- extension at the elbow joint
  15. triceps brachii (medial head)
    • origin- posterior humerus medial and inferioir to the radial groove
    • insertion- olecranon of the ulna
    • innervation-┬áradial nerve (C5-T1)
    • action- extension at the elbow joint
  16. bracioradialis
    • origin- lateral epicondyle and supracondylar ridge of the humerus
    • insertion- styloid process of the radius
    • innervation- radial nerve (C5-T1)
    • action- flexion at the elbow joint
  17. extensor carpi radialis longus
    • origin- lateral epicondyle and supracondylar ridge of the humerus
    • insertion- base of the 2nd metacarpal
    • innervation- radial nerve (C5-T1)
    • action- extension at the wrist joint, abduction at the wrist
  18. extensor digitorum
    • origin- lateral epicondyle and supracondylar ridge of the humerus
    • insertion- middle and distal phalanges of digits (2-5 via extensor expansion)
    • innervation- posterior interosseous nerve
    • action- extension of the MP joint of digits 2-5
  19. extensor digiti minimi
    • origin- lateral epicondyle and supracondylar ridge of the humerus
    • insertion- extensor expansion
    • innervation- posterior interosseous nerve
    • action- extension of the MP joint of digit 5
  20. extensor carpi ulnaris
    • origin- lateral epicondyle and supracondylar ridge of the humerus
    • insertion- base of the 5th metacarpal
    • innervation- posterior interosseous nerve
    • action- extension at the wrist joint, adduction at the wrist
  21. supinator
    • origin- radius, ulna and interosseous membrane
    • insertion- radius
    • innervation- deep radial nerve
    • action- supination
  22. abductor pollicis longus
    • origin- radius, ulna and interosseous membrane
    • insertion- base 1st metacarpal
    • innervation- posterior interosseous neerve
    • action- abduction of the thumb
  23. extensor pollicis longus
    • origin- radius, ulna and interosseous membrane
    • insertion- base of the distal phalanx of the thumb
    • innervation- posterior interosseous neerve
    • action- extension of the thumb
  24. extensor indicis
    • origin- radius, ulna and interosseous membrane
    • insertion- extensor expansion of digit 2
    • innervation- posterior interosseous nerve
    • action- extension of the MP joint of digit 2
  25. extensor pollicis brevis
    • origin- radius, ulna and interosseous membrane
    • insertion- base of the proximal phalanx of the thumb
    • innervation- posterior interosseous nerve
    • action- extension of the thumb
  26. triangular interval
    deep brachial, radial nerve
  27. cubital fossa
    • border- line between lateral and medial epicondyle, pronator teres muscle (medial), brachioradialis muscle (lateral)
    • roof- antebrachial fascia, bicipital aponeurosis
    • floor- brachalis muscle and tendon, supinator, pronator teres

    whats runs through it- biceps tendon, brachial artery, median nerve

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