Chapter 4 Flashcards
Shoulder girdle is made out of what joints?
SC joint,
AC joint
Scapulothoracic
Sternoclavicular joint is supported by what ligaments?
arthrodial joint
anteriorly and posteriorly by SC ligament
Costcoclavicular and interclavicular provide stability
Acromioclavicular joint
arthrodial and supproted by costco lig and ac ligaments
Scapulothoracic
not a ture synovial joint. Movements depends on SC and AC joint
Glenohumeral joint works together with?
Shoulder girdle for movement
5 muscles involved in shoulder girdle movements
trap- upper, middle, lower rhomboid levator scapula serratus anterior pect minor
Upper Trap
O: base of skull, occipitals, proximal tuberance and cervical ligaments
I: lateral 1/3 clavicle, acromion process
N: spinal nerve 11
A: elevation
Middle Trap
O: spinous process T1-T5
I: spine of scapula
N: spinal nerve 11
O: retraction
Lower Trap
O: T6-12
I: base of scapula spine
N: spinal nerve 11
A: depression
A synergist for middle trap is
rhombus
Levator scapulae
O: transverse processes C1-C4
I: superior angle of scapula
N: dorsal scapular nerve
A: elevation
Synergist to levator scapulae?
Upper trap
Rhombus
O: C7-T5
I:medial border or scapula
N: dorsal scapular nerve
A: retraction
Serratus Anterior
O: Upper 9 ribs
I: medial border of scapula
N: long thoracic nerve
A: protraction
Pect Minor
O: Ribs 3-5
I: coracoid process
N: medial pectoral nerve
A: protraction and depression
