shoulder anatomy Flashcards
what are these muscles?
insersion and origin?
- pectoralis major - sternal head
- pectoralis major - clavicular head
intertubercular sulcus
medial clavicle
sternum (superior 6 costal cartilages)
what are these muscles?
dont need to know yellow
insersion and origin?
serratus anterior
ribs 1- 8
medial boarder of spacula
what are these muscles?
origins and inersions?
red = trapezius
yellow = latissimus dorsi
latissimus = spinous processes T7-12, iliac crest, lower 3 ribs and intertubercular sulcus
trapezius = skill, ligamentum nuchae, spinous processes C7-T12 and intertubercular process
what are these 4 muscles?
the rotator cuff
green =subscapularis (anterior)
red = supraspinatus (posterior)
blue = infraspinatus (posterior)
yellow = teres minor (posterior)
all posterior scapula - greater humeral tubercle
anterior = scapula - lesser tubercle
what are these?
attacthements?
red = deltoid
yellow = teres major
deltoid = clavicle, acromion and scapular spine tooooooo deltoid tuberosity on lateral humerus
teres major = inferior scapula to medial lip of intertubercular groove
what is the purple one?
attatchments?
biceps brachii
from supraglenoid tubercle of scapula (long head) and caracoid process (short head) tooooo
radial tuberosity and fascia of forarm
what is this?
what is red and what is green?
anterior view of scapula
green = acromion
red = coracoid process
what is this?
red?
green?
yellow?
lateral view of scapula
coracoid process
acromion
glenoid fossa
what is this?
red ?
green?
yellow?
posterior view of scapula
coracoid process
acromion
glenoid fossa
what can you get if the nerve supply to the serratus anterior os damaged?
what surgery commonly causes this?
why it it common?
winging of scapula
masectomy
the long thoracic nerve runs over the surface of ther serratus anterior and its not protected well
why does the shoulder joint dislocate so much?
what makes it mobile?
what makes it stable?
most mobile therefore least stable
shallow glenoid fossa, disproportionate articular suface (fossa is small), lax inferior capsule (allows abduction tho)
static structures: gelnoid labrum, joint capsule, intra and extracapular ligaments
dynamic stablisers: rotator cuff muscles, other muscles
what am i looking at here?
what is the blue one?
anterior shoulder - showing intracapsular and extracapular ligaments
glenohumoral ligamnets - superior, middle, inferior (intra)
red and yellow and purple = extra
red = coracohumeral
yellow = coracoacromial
purple = transverse humeral ligament - over tendone of biceps brachii
label this bitch
whats the dip?
what neck is broken more?
red = humerus head
blue = greater tubercle
green = lesser tubercle (can see on anterior)
yellow = anatomical neck - where epiphysel plate is and where capsule attatches
surgical neck is broken more
intertubercular groove/ sulcus for attatchemnt and tendon of biceps brachii
label this bitch
what joints are present?
its a clavicle
only need to know the ends
sternoclavicular
acromioclavicular
