The acromioclavicular joint is classified as a _____ type of diarthrotic articulation.
All skeletal muscles eliciting motion at the glenohumeral joint are innervated by nerves in the _____ plexus.
brachial
What 'elbow' muscle may be referred to as the "hitchhiker's muscle"?
brachioradialis
The prime agonist of humeroulnar extension
triceps brachii
Which rotator cuff muscle is a prime agonist of glenohumeral internal rotation?
subscapularis
Describe the relationship of the rhomboids to the trapezius.
Rhomboids are deep to the trapezius
Describe scapular movement during glenohumeral flexion.
Elevated
Upwardly rotated
AbductedThe proximal and distal radiolunar joints are classified as _____ type of diarthrotic articulations.
pivot
The humeroradial joint is a _____ type of diarthrotic articulation.
gliding
Identify the 5 articulations of the shoulder girdle complex
acromioclavicular
sternoclavicular
coracoclavicular
scapulothoracic
glenohumeral
Which scapular muscle assists in elevating the ribs during inspiration?
pectoralis minor
Identify the muscles of the rotator cuff
supraspinatus
infraspinatus
teres minor
subscapularis
Describe the specific articulating structures of the humeroulnar joint.
humeral trochlea + ulnar trochlear fossa
The ligament that stabilizes the radial head against the radial notch of the ulna.
annular ligament
Identify two resistance exercises particularly effective for strengthening the scapular protractors.
Bench press
Push up
Chest fly
Describe the effect of habitual poor postures related to seated desk work & cell phone use on scapular muscles. (i.e. what muscle group is tight and weak?)
Scapular protractors become tight
Scapular retractors become weak
Which glenohumeral joint actions occur in the transverse plane?
horizontal abduction and adduction
internal and external rotation
Define and describe (angle) the carrying angle
Lateral deviation of the forearm from the upper arm in anatomic position
5-15 degrees
Describe scapular movement during glenohumeral abduction.
upwardly rotated
"Hammer curls," in which the radioulnar joint is in a neutral position, emphasizes which elbow flexor?
brachioradialis
Identify two resistance exercise effective for strengthening the scapular retractors.
Row ('lawnmower pull')
Chin ups, pulls ups
Parallel bar dips
Reverse fly
Identify the prime agonists of GH horizontal abduction
deltoid - middle and posterior
latissimus dorsi*
infraspinatus
teres minor
humeroulnar flexion
radioulnar supination
Frontal raises, barbell overhead presses, and parallel bar dips are examples of which glenohumeral movement?
Glenohumeral flexion
Identify two resistance exercises effective in strengthening glenohumeral abductors.
lateral raises
upright rows
dumbbell overhead press