shoulder girdle Flashcards
structures in shoulder girdle
clavicle
scpular
sternum
how many joints on shoulder clavicle
2
what type of joint is at shoulder girdle
gliding
what part of sternum
manubrium of sternum
acromioclavicular joint
acromion process of scapular and outer end of clavicle
gliding
allows greater freedom of movement of girdle and shoulder
sternoclavicular joint
saddle joint
movement of clavicle relative to sternum
only boney connection between upper appendicular skeleton and axial
anatomy of scapular
superior angle
spine
inferior angle
glenoid fossa
acromion process
coracoid process
movements at girdle
elevation (hunching)
depression
ab and adduction
upward rotation
muscles that originate at scapular
supraspinatus
infraspinatus
teres minor
biceps brachii long and shirt head
middle deltoid
triceps brachia long head
muscles that insert and move scapular
middle and lower trapezius (medial line pull = adduction )
levator scapulae
rhomboid
serrates anterior (abduction)
5 main muscles
posterior = trapezius, rhomboid, levator scapulae
anterior = pectoralis minor, serratus anterior
nuchal ligament
starts - occipital pertuberance
ends - spinous process C7
supports head weight
point of attachment
rhomboids and elevator scapulae movements
elevation
adduction
downward rotation
rhomboids and elevator scapulae origin
C7 - C5
C1-C4
rhomboids and elevator scapulae insertion
medial board of scapular