Show:
Joints
Ligaments
Muscle Attachments
Muscle Function
Wild Card
100
How many axes of motion are in the GH joint?
3
100
True or False: majority of GH stability comes from the fibrous joint capsule and ligaments
False
100
What muscle originates at the base of the skull and inserts onto the lateral clavicle?
Upper Trapezius
100
Identify the function of the middle trapezius
scapula retraction
100
The coupling of scapula movement with arm movement is called...
Scapulohumeral rhythm
200
The sternoclavicular joint is what type of synovial joint?
saddle
200
What GH ligament attaches to the coracoid process and prevents anterior/inferior dislocation?
Coracohumeral ligament
200
What muscle originates on the spine and inserts along the medial border of the scapula?
Rhomboids
200
Name a function of the coracobrachialis
Arm flexion; arm adduction
200
To fully extend the arm at the GH joint, what motion must occur at the scapulothoracic joint?
Retraction
300
True of False: In normal shoulder complex ROM, medial and lateral rotation are both 90 degrees
True
300
What ligament creates a "roof" over the GH joint?
Coracoacromial ligament
300
The pectoralis minor originates on ribs 3-5; what is its insertion?
coracoid process
300
Name 2 functions of the posterior deltoid
arm extension, arm lateral rotation, horizontal abduction
300
What structure deepens the shoulder socket and cushions the GH joint?
glenoid labrum
400
What 2 bone structures articulate to form the GH joint?
glenoid fossa of scapula and head of humerus
400
The coracoclavicular ligament adds to the stability of what joint?
Acromioclavicular joint
400
What muscle originates on the inferior scapula angle and inserts on the medial lip of the intertubercular groove?
Teres Major
400
Identify the function of the levator scapulae that occurs around the anterioposterior axis
lateral flexion of the neck
400
What sac-like structure reduces friction between the acromion and supraspinatus tendon?
subacromial bursa
500
Name the 3 primary movements that occur at the scapulothoracic joint
elevation/depression; protraction/retraction; upward/downward rotation
500
What 2 ligaments (besides the sternoclavicular ligaments) stabilize the sternoclavicular joint?
interclavicular & costoclavicular ligaments
500
What muscle originates on the thoracic and lumbar spine, sacrum, and iliac crest via the thoracolumbar fascia?
Latissimus dorsi
500
Identify the rotator cuff muscle that medially rotates the arm
Subscapularis
500
What motion must occur at the sternoclavicular joint to allow for full arm abduction?
upward rotation of the clavicle