Card Set Information

2013-01-30 21:25:39

pivko and rosen's spring 2013 class
Show Answers:

  1. scapula's angle of retroversion
    draw a line thru the scapula parallel to the floor along its width, and another thru the body going parallel with the width thru the head of the humerus
  2. where's the acromion on the scapula
    posterior lateral -- it's the upper end of the spine of scap
  3. where's the coracoid process on the scapula
    anterior lateral - it's the beak coming off the front pointing away from your clavicle
  4. where's the suprascapular notch?
    sup ant scap - it's a divot in the anterior upper ridge before the bone veers off for the coracoid process
  5. where's the spinoglenoid notch?
    post lat - btwn the end of the spine (where it veers off to become the acromion) and the edge of the glenoid fossa
  6. key thing about the suprascapular and spinoglenoid notches?
    the suprascapular nerve runs thru them

    it's held in the suprascapular notch by the transverse scapular lig
  7. coracoacromial ligament attachments
    • edge of acromion just in front of articular surface for clavicle
    • whole length of lat border of coracoid process
  8. superior tranverse scapular lig - where, and what's she stressing about this guy?
    • base of coracoid process to med end of scapular notch
    • converts the scapular notch into a foramen
    • can ossify
    • the suprascapular nerve runs under it, so if tight it can entrap the nerve
  9. 6 true joints and 2 fake of the shoulder complex/girdle
    • scapulothoracic (ST)
    • glenohumeral (GH)
    • sternoclavicular (SC)
    • acromioclavicular (AC)
    • costosternal
    • costovertebral

    • suprahumeral (where the coracoacromial lig meets the humerus) aka the humero-coraco-acromial joint
    • bicipital groove - not a joint, just a tract with biceps tendon running thru it
  10. suprahumeral joint
    • not a true joint
    • aka the humero-coraco-acromial joint
    • coracoacromial arch is made by the coracoacromial lig
    • supraspinatus tendon passes under this arch
  11. scapulothoracic joint
    • not a true, physiologic joint
    • riding of scapul on posterior thoracic wall
  12. motions at the scapulothoracic joint
    • elev/depression
    • pro/retraction
    • ab/adduction
    • up/down rotation of inf angle
    • distraction (lifting the scap posteriorly)
  13. where is the coracoid process in comparison to the clavical?
    go 2/3 out laterally along length of clavicle, drop down, it's there
  14. spine of scap is how far down scapula?
  15. a visible sign of problens in nervous tissue or vasculature

    • and also redness, swelling,
    • skin changes (dryness, hair loss) bc of loss of nutrition to skin
  16. coracobrachialis attachments and muscle
    coracoid process of scap --> mid-medial humerus

    musculocutaneous nerve (C6, C7)
  17. which are the scapulothoracic muscles?
    • trapezius
    • pectoralis minor
    • serratus anterior
    • rhomboids
    • levator scapulae
  18. what do scapulotharacic muscles do as a group?
    • elev/depress scap
    • ab/adduction
    • up/downward rot of scap
  19. trap attachments
    • med sup nuchal line & external protuberance of occipital bone
    • ligamentum nuchae
    • SP of C7-T12
    • --->
    • lateral clavicle
    • acromion
    • spine of scapula
  20. trap nerve and actions
    • C3, C4, CN XI
    • upper fibers: elevate and upwardly rotate scap, extend neck
    • middle fibers: adduct scap
    • lower fibers: depress and upwardly rotate scap
  21. pec minor attachments
    ant surface of sternal ends of ribs 3-5 --> coracoid process of scap
  22. pec minor nerve and actions
    • med pec nerve (C8, T1)
    • draws scap forward and down
    • elevates ribs if scap is fixed
  23. rhomboid M/m nerve
    dorsal scapular nerve C5
  24. levator scapulae attachments
    TP of C1-C4 --> sup med border of scap (btwn spine and superior angle)
  25. serratus anterior attachments
    anterior, half way to lat, 1-9th ribs --> medial border of scap
  26. role of serratus ant, and nerve
    • draws scap forward and lat / elevates ribs if scap is fixed
    • long thoracic n. C5-C7
  27. scapulohumeral muscles, as a group, do what actions?
    • flex/ext of humerus
    • ab/adduction
    • IR/ER
  28. biceps attachments
    • long head: supraglenoid tubercle of scapula
    • short head: coracoid process fo scapula
    • -->
    • radial tuberosity on the ant. ulna
  29. biceps nerve and actions
    • musculocutaneous n. (C5, C6)
    • flex and supinate elbow
    • flex shoulder (weak)
    • stabilize humeral head during deltoid contraction