Shoulder Girdle Flashcards
What are the joints of the shoulder girdle?
acromioclavicular, scapulothoracic, sternoclavicular
What are the motions of the shoulder girdle?
elevation, depression, protraction, retraction
Shoulder Girdle Elevators
trapezius (upper), levator scapula
Shoulder Girdle Depressors
trapezius (lower)
Shoulder Girdle Retractors
trapezius (middle), rhomboideus minor, rhomboideus major
Shoulder Girdle Protractors
pectoralis minor, serratus anterior
Does the scapula intersect with the thorax?
no
How does the scapula stay in place over the thorax?
soft tissues and muscles keep it in position
What is the scapulothoracic articulation?
the relationship of the scapula with the posterior thorax (posterior ribs 2-7)
How is the sternoclavicular joint stabilized?
the sternoclavicular ligament
Which joint has the greatest mobility of all the joints?
the shoulder (glenohumeral) joint
Why does the shoulder joint have so much mobility?
It’s a ball and socket joint.
Name the “ball” of the shoulder joint.
head of humerus
Name the “socket” of the shoulder joint.
scapula (glenoid fossa cavity)
What is the labrum made of?
fibrocartilage
