Scapular region, superficial chest, intrinsic shoulder muscles, shoulder joint Flashcards
which skeleton is the pelvis girdle a part of?
appendicular
What bones make up the shoulder complex?
humorous
scapula
clavicle
posterior thoracic wall
what is the function of the clavicle?
-supports anterior shoulder
-only bone attaching upper limb to axial skeleton
Why is the clavicle susceptible to injury?
little protection
S shape
the glenohumeral joint allows which motions?
flexion/extension
abduction/adduction
medial/lateral
circumduction
What is one thing that acts to help stabilize the glenohumeral joint?
the rotator cuff muscles
what kind of movement occurs with the scapulothoracic joint?
elevation/depression
protraction/retraction
up/down rotation
what are the extrinsic shoulder joint muscles?
trapezius
levator scapulae
rhomboids
latissimus dorsi
pec maj + min
serratus anterior
what are the intrinsic muscles of the shoulder?
deltoid
teres major
rotator cuff muscles
Where does the trapezius attach?
C and T spines
Scapular spine and clavicle
what is the action of the trapezius?
scapular retraction and rotation
what is the action of the rhomboids?
scapular retraction
what is the action of the levator scapulae?
scapular elevation
What is the attachment of pec major?
clavicle and sternum
bicipital groove
what is the action of pec major?
humeral adduction
humeral internal rotation
where does the pec minor attach?
coracoid process
where does the serratus anterior attach?
medial boarder of scapula and ribs
what is the action of serratus anterior?
scapular protraction
what is the innervation of serratus anterior?
Long thoracic nerve
what can happen if there is serratus anterior paralysis?
scapular winging
long thoracic nerve damage?
what is the action of the deltoid?
abduction, flexion/extension
where does the deltoid attach?
scapular spine, clavicle
deltoid tuberosity
what are the rotator cuff muscles?
supraspinatus
infraspinatus
teres MINOR
subscapularis
how can you spot a glenohumeral dislocation?
-loss of deltoid contour
-injured arm appears longer
-humeral head dislocates inferiorly but presents anteriorly due to pec major pulling it
