Term
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Definition
O: Rib 3-5 and overlying fascia
I: Coracoid process of scapula
A: w/ Serratus Anterior, draws scapula laterally and forward around chest wall; Rotates scapula and depresses apex of shoulder |
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Term
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Definition
O: All ribs
I: Medial border of scapula
A: w/ pectoralis minor, draws scapula laterally and forward around chest wall; protracts scapula; prime mover in all forward reaching and pushing actions; aids in rotating scapula to elevate apex of shoulder; fixes scapular during abduction of arm |
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Term
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Definition
O: External occipital protuberance; medial 1/3 of superior nuchal line; nuchal ligament; spinous processes of vertebrae C7-T12
I: Acromion and spine of scapula; lateral 1/3 of clavicle
A: Stabilizes scapula and shoulders during arm movement; w/ other muscles, rotates and retracts scapula; extends and laterally flexes neck |
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Term
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Definition
O: Transverse processes of vertebrae C1-C4
I: Superior angle to medial border of scapula
A: Elevates scapula if cervical vertebrae are fixed; flexes neck laterally if scapula is fixed; retracts scapula and braces shoulder; rotates scapula and depresses apex of shoulder |
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Term
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Definition
O: Spinous processes of vertebrae C7-T1; nuchal ligament
I: Medial border of scapula
A: Retracts scapula and braces shoulder; fixes scapula during arm movements |
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Term
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Definition
O: Spinous processes of vertebrae T2-T5
I: Medial border of scapula
A: Retracts scapula and braces shoulder; fixes scapula during arm movements |
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Term
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Definition
O: Medial half of clavicle; lateral margin of sternum; costal cartilages 1-7; aponeurosis of external oblique
I: Lateral lip of intertubercular sulcus of humerus
A: Flexes, adducts, and medially rotates humerus |
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Term
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Definition
O: Vertebrae T7-L5; lower three ribs, iliac crest; thoracolumbar fascia
I: Floor of intertubercular sulcus of humerus
A: Adducts and medially rotates humerus; extends the shoulder joint; produces backwards swing of arm; pulls body forward and upward; aids in deep inspiration, sudden expiration, and prolonged forceful expiration |
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Term
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Definition
O: Acromion and spine of scapula; clavicle
I: Deltoid tuberosity of humerus
A: Anterior fibers flex and medially rotate arm; lateral fibers abduct arm; posterior fibers extend and laterally rotate arm; involved in arm swinging and adjustment of hand height |
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Term
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Definition
O: Supraspinous fossa of scapula
I: Greater tubercle of humerus
A: Aids deltoid in abduction of arm; resists downward slippage of humeral head |
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Term
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Definition
O: Vertebrae T7-L5; lower three ribs, iliac crest; thoracolumbar fascia
I: Floor of intertubercular sulcus of humerus
A: Adducts and medially rotates humerus; extends the shoulder joint; produces backwards swing of arm; pulls body forward and upward; aids in deep inspiration, sudden expiration, and prolonged forceful expiration |
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Term
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Definition
O: Acromion and spine of scapula; clavicle
I: Deltoid tuberosity of humerus
A: Anterior fibers flex and medially rotate arm; lateral fibers abduct arm; posterior fibers extend and laterally rotate arm; involved in arm swinging and adjustment of hand height |
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Term
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Definition
O: Supraspinous fossa of scapula
I: Greater tubercle of humerus
A: Aids deltoid in abduction of arm; resists downward slippage of humeral head |
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Term
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Definition
O: Infraspinous fossa of scapula
I: Greater tubercle of humerus
A: Modulates action of deltoid; rotates humerus laterally |
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Term
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Definition
O: Inferior angle of scapula
I: Medial lip of intertubercular sulcus of humerus
A: Extends and medially rotates humerus |
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Term
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Definition
O: Lateral border and adjacent posterior surface of scapula
I: Greater tubercle of humerus; posterior surface of joint capsule
A: Modulates action of deltoid; Rotates humerus laterally |
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Term
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Definition
O: Subscapular fossa of scapula
I: Lesser tubercle of humerus; Anterior surface of joint capsule
A: Modulates action of deltoid; rotates humerus medially |
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Term
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Definition
O: Coracoid process
I: Medial aspect of humeral shaft
A: Flexes and medially rotates arm; resists deviation of arm from frontal plane during abduction |
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Term
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Definition
O: Long head-superior margin of glenoid cavity; short head-coracoid process
I: Tuberosity of radius; fascia of forearm
A: Rapid or forceful supination of forearm; synergist in elbow flexion; slight shoulder flexion; tendon of long head stabilizes shoulder by holding humeral head against glenoid cavity |
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Term
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Definition
O: Anterior surface of distal half of humerus
I: Coronoid process and tuberosity of ulna
A: Prime mover of elbow flexion |
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Term
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Definition
O: Lateral supracondylar ridge of humerus
I: Lateral surface of radius near styloid process
A: Flexes elbow |
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Term
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Definition
O: Long head-inferior margin of glenoid cavity and joint capsule; Lateral head-posterior surface of proximal end of humerus; Medial head-posterior surface of entire humeral shaft
I: Olecranon; fascia of forearm
A: Extends elbow; long head extends and adducts humerus |
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Term
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Definition
O: Lateral epicondyle of humerus
I: Olecranon and posterior surface of ulna
A: Extends elbow; help to control ulnar movement during pronation |
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Term
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Definition
O: Anterior surface of distal ulna
I: Anterior surface of distal radius
A: Prime mover of forearm pronation; resists separation of radius and ulna when force is applied to forearm through wrist |
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Term
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Definition
O: Humeral shaft near medial epicondyle; coronoid process of ulna
I: Lateral surface of radial shaft
A: Assists pronator quadratus in pronation in rapid or forceful action; weakly flexes elbow |
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