MT-shoulder and arm complex

  1. The 3 bones that make up the shoulder complex
    ClavicleImage Upload 1


  2. Clavicle joints
    Sternoclavicular (S/C) joint articulates the clavicle with the sternum

    Acromioclavicular (A/C) joint articulates the clavicle with the acromion

    Glenohumeral joint articulates the humerus with the scapula
  3. Deltoid
    • Upload 2
    • O: Lateral 1/3 of clavicle, acromion, spine of scapula

    I: Deltoid Tuberosity

    A: Abduct, flex, medially rotate, horizontally abduct shoulder
  4. Trapezius
    • O: External occipital protuberance, medial portion of superior nuchal, ligamentum nuchae, spinous processes c-7 through t-12
    • Image Upload 3
    • I: lateral 1/3 of clavicle, acromion, spine of scapula

    A: extend, laterally flex, rotate neck and head/ elevateupwardly rotate, adduct, stabilize, depress, upwardly rotate scapula
  5. Latissimus Dorsi
    • O: inferior angle of scapula, spinous processes of last
    • Image Upload 4
    • 6 thoracic vertebrae, last 3-4 ribs, posterior iliac crest, thoracolumbar aponeurosis

    I: Intertubercular groove of humerus

    A: Extend, adduct, medially rotate shoulder
  6. Teres Major
    • Image Upload 5
    • O: Inferior angle and lower 1/3 of scapula

    I: Crest of lesser tubercle of humerus

    A: Extend, adduct, medially rotate shoulder
  7. Rotator cuff muscles
    • Supraspinatus
    • Image Upload 6
    • Infraspinatus

    Teres minor

  8. Supraspinatus
    O: Supraspinous fossa

    I: Surperior aspect of greater turbecle

    A: Helps deltoid abduct arm
  9. Infraspinatus
    O: infraspinous fossa

    I: middle part of greater turbecle

    A: laterally rotates arm at shoulder
  10. Teres minor
    O: axillary/ lateral border of scapula

    I: inferior aspect of greater tubercle

    A: laterally rotates, abducts arm at shoulder
  11. Subscapularis
    O: subscapular fossa

    I: lesser tubercle of humerus

    A: medially rotates arm at shoulder
  12. Rhomboid Major and Minor
    • O: Major; spinous process of T-2 through T-5
    • Minor; spinous process of C-7 through T-1
    • Image Upload 7
    • I: Major; medial border of scapula between the spine and the inferior angle
    • Minor: upper portion of the medial border of scapula

    A: Adduct, elevate, downwardly rotate scapula
  13. Levator Scapula
    • O: Transverse processes of C1-C4
    • Image Upload 8
    • I: Medial border of scapula between spine and superior angle

    • A: Elevate, downwardly rotate scapula and
    • laterlly flex, rotate, extend head
  14. Rhomboid Major and Minor
    Image Upload 9

    • O: Major: Spinous processes of T-2 through T-5
    • Minor: Spinous processes of C-7 through T-1

    • I: Major: Medial border of scapula between spine and scaupla
    • Minor: Upper portion of medial border of scapula

    A: Major: Adduct, Elevate, Downwardly rotate scapula
  15. Levator Scapula
    Image Upload 10

    O: Transverse vertabrae C-1 through C-4

    I: Medial border, between superior angle and superior portion of spine

    • A: Elevate, downwardly rotate scapula
    • Laterally flex, rotate, extend head and neck
  16. Serratus Anterior
    Image Upload 11

    O: External surfaces of upper 8 or 9 ribs

    I: Anterior surface of medial border of scapula

    • A: Abduct, upwardly rotate, depress scapula/ holds medial border of scapula to rib cage
    • Elevate thorax
  17. Pectoralis Major
    Image Upload 12

    O: Medeial half of clavicle, sternum, cartilage of first 1-6 ribs

    I: crest of greater tubercle of humerus

    • A: Adduct, medially rotate shoulder
    • Flex, horizontally adduct, extend shoulder
  18. Pectoralis Minor
    Image Upload 13

    O: 3rd, 4th, and 5th ribs

    I: Medial surface of coracoid process of scapula

    A: Depress, abduct, downwardly rotate scapula
  19. Subclavius
    Image Upload 14

    O: first rib and cartilage

    I: inferior surface of 1/3 clavicle

    • A: depress clavicle
    • elevaate first rib
    • stabalize strenoclavicular joint
  20. Biceps Brachii
    Image Upload 15

    • O: Short head: caracoid process of scapula
    • Long head: Spraglenoid tubercle of scapula

    I: Tuberosity of the radius and aponeurosis of biceps and poneurosis of the biceps brachii

    • A: Flex elbow and elbow
    • Supinate forearm
  21. Triceps Brachii
    Image Upload 16

    • O: Long head: Infraglenoid tubercle of scapula
    • Lateral head: posterior surface of proximal half of humerus
    • Medial head: Posteriour surface of distal half of humerus

    I: Olecranon process of ulna

    • A: extend elbow and shoulder
    • Adduct shoulder
  22. Coracobrachialis
    Image Upload 17

    O: Coracoid process of scapula

    I: Medial surface of mid humeral shaft

    A: flex, adduct shoulder
Card Set
MT-shoulder and arm complex
Information on the arms and shoulder muscles and bones