Kinesiology pop quiz #3

Shoulder Girdle connective tissues

Glenoid labrum, Ligaments, Bursa, Intraarticular tendon

Glenoid labrum

Provides passive stability of the GH(glenohumera) joint by creating a “suction cup”

Ligaments

GH ligaments, Coracohumeral ligament, Coracoacromial ligament, Capsular ligament(s), Transverse humeral ligament

Stabilizes the long head bicep brachii tendon on the humerus across the intertubercular groov

Bursa

Subdeltoid/subacromial bursa

Intra-articular tendon

Long head bicep brachii tendon

Total flexion available due to scapulohumeral rhythm of the scapulothoracic and glenohumeral joints is____.

180 deg

Which group of muscles are on the posterior side of the body in 3 parts and create scapular retraction (adduction) when working together?

trapezius

When the shoulder joint horizontally abducts, the scapula___as a paired motion.

retracts (adducts)

Which muscle synergize to protract (abduct) the scapula?

pectoralis minor and serratus anterior

When the shoulder joint flexes, the scapula___ to create total motion via scapulohumeral rhythm

elevates

Which muscle attaches to the corocoid process of the scapula?

short head of the biceps brachii

Which synovial joints create arthrokinematic motion that allows for scapulothoracic osteokinematic motion?

acromioclavicular and sternoclavicular

What is a unique muscle action of the lower trapezius that helps improve posture?

scapular depression

The glenohumeral joint contributes___of horizontal adduction to create 150 deg of total horizontal adduction.

135 deg

Which muscles protracts (abducts) the scapula?

serratus anterior

Which muscle elevates the scapula?

levator scapulae

What are structure included in the scapulothoracic joint listed from most superficial to deepest?

scapula, subscaparis, serratus anterior, thorax/rib cage

What muscles synergize to create glenohumeral internal rotation?

teres major, latissimus dorsi, subscapularis

which tendon is stabilized by the transverse humeral ligament?

long head of the biceps brachii

The glenohumeral joint contributes____of horizontal adduction to create 150 deg of total horizontal adduction.

135 deg

Which muscle has the primary role of initiating glenohumeral abduction?

supraspinatus

When the shoulder joint horizontally abducts, the scapula____as a paired motion.

retracts (adducts)

What muscle flexes both the glenohumeral joint and the elbow?

biceps brachii

Which is an action of the latissimus dorsi?

internal rotation

which is not part of the rotator cuff according to the textbook?

teres major

Total flexion available due to scapulohumeral rhythm of the scapulothoracic and glenohumeral joint is____.

180 deg

Which muscle is a 2-joint muscle crossing the elbow and shoulder joints?

short head of the bicep brachii

When the shoulder joint flexes, the scapula____to create total motion via scapulohumeral rhythm.

elevates

Which muscle has a muscle action to both flex and extend the glenohumeral joint/shoulder?

pectoralis major