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59 Cards in this Set
- Front
- Back
Biceps Brachii Action
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Flexes the elbow, Supinates the forearm, Flexes the shoulder
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Biceps Brachii Origin
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Short head: Coracoid process of scapula Long head: Supraglenoid tubercle of scapula
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Biceps Brachii Insertion
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Tuberosity of the radius and aponeurosis of the biceps Brachii
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Triceps Brachii Action
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All Heads: Extend the elbow Long Heads: Extend the shoulder, adducts the shoulder
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Triceps Brachii Origin
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Long Head: Infraglenoid tubercle of scapula Lateral head: posterior surface of proximal half of humerus Medial head: posterior surface of distal half of humerus
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Triceps Brachii Insertion
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Olecranon process of ulna
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Coracobrachialis Action
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Flexes the shoulder, Adducts the shoulder
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Coracobrachialis Origin
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Coracoid process of scapula
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Coracobrachialis Insertion
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Medial surface of mid-humeral shaft
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Deltoid Action (all fibers)
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All Fibers: abduct the shoulder
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Deltoid Origin
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Lateral one-third of clavicle, a acromion, and spine of scapula
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Deltoid Action (posterior fibers)
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Posterior Fibers: extends the shoulder, laterally rotates the shoulder, horizontally abducts the shoulder
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Deltoid Action (anterior fibers)
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Anterior Fibers: flex the shoulder, medially rotates the shoulder, horizontally abducts the shoulder
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Deltoid Insertion
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Deltoid Tuberosity
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Trapezuis Action (upper fibers bilaterally)
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Upper Fibers: bilateral- extend the head and neck,
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Trapezius Action (upper fibers unilaterally)
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unilateral- laterally flex the head and neck to same side, rotates the head and neck to the opposite side, elevates the scapula, upwardly rotates the scapula
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Trapezius Action (middle fibers)
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Middle Fibers: Adduct the scapula, stabilize the scapula
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Trapezius Action (lower fibers)
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Lower Fibers: depress the scapula, upwardly rotate the scapula
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Trapezius Origin
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external occipital protuberance, medial portion of superior nuchal line of occiput, ligamentum nuchae, and spinous process of C-7 to T-12
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Trapezius Insertion
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lateral one-third of clavicle, acromion, and spine of scapula
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Latissimus Dorsi Action
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Extends the shoulder, Adducts the shoulder, Medially rotates the shoulder
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Latissimus Dorsi Origin
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Spinous process of last six thoracic vertebrae, last three or four ribs, thoracolumbar aponeurosis and posterior iliac crest
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Latissimus Dorsi Insertion
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Crest of the lesser tubercle of the humerus
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Teres Major Action
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Extends the shoulder, Adducts the shoulder, Medially rotates the shoulder
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Teres Major Origin
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Lateral side of inferior angle and lower half of lateral border of scapula
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Teres Major Insertion
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Crest of the lesser tubercle of the humerus
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Supraspinatus Action
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Abducts the shoulder, Stabilizes head of humerus in glenoid cavity
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Supraspinatus Origin
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Supraspinous fossa of scapula
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Supraspinatus Insertion
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Greater tubercle of humerus
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Infraspinatus Action
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Laterally rotates the shoulder, Adducts the shoulder, Extends the shoulder, Horizontally abducts the shoulder, Stabilizes the head of humerus in glenoid cavity
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Infraspinatus Origin
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Infraspinous fossa of scapula
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Infraspinatus Insertion
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Greater tubercle of humerus
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Teres Minor Action
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Laterally rotates the shoulder, Adducts the shoulder, Extends the shoulder, Horizontally abducts the shoulder, Stabilizes head of humerus in glenoid cavity
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Teres Minor Origin
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Superior half of lateral border of scapula
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Teres Minor Insertion
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Lesser tubercle of the humerus
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Subscapularis Action
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Medially rotates the shoulder, Stabilizes head of humerus in glenoid cavity
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Subscapularis Origin
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Subscapular fossa of the scapula
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Subscapularis Insertion
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Lesser tubercle of the humerus
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Rhomboid Major and Minor Action
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Adducts the scapula, Elevates the scapula, Downwardly rotates the scapula
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Rhomboid Major and Minor Origin
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Minor: Spinous processes of C-7 and T-1 Major: Spinous processes of T-2 to T-5
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Rhomboid Major and Minor Insertion
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Medial border of the scapula between spine of the scapula and inferior angle
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Levator Scapula Action (unilateral)
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Elevates the scapula, Downwardly rotates the scapula, Laterally flexes the head and neck, Rotates the head and neck to the same side
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Levator Scapula Action (bilateral)
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Extends the head and neck
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Levator Scapula Origin
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Transverse processes of first through fourth cervical vertebrae
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Levator Scapula Insertion
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Medial border and superior angle of scapula
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Serratus Anterior Action
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Origin fixed: Abduct the scapula, Depress the scapula, Holds the medial border of scapula against rib cage Scapula stabilized: forced inhalation
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Serratus Anterior Origin
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Surfaces of upper eight or nine ribs
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Serratus Anterior Insertion
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Anterior surface of medial border of scapula
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Pectoralis Major Action (all fibers)
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Adducts the shoulder, Medially rotates the shoulder, May assist in elevating the thorax in forced inhalation ( if arm is fixed)
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Pectoralis Major Action (upper fibers)
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Flex the shoulder, Horizontally adduct the shoulder
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Pectoralis Major Action (lower fibers)
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Extend the shoulder
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Pectoralis Major Origin
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Medial half of clavicle, sternum, cartilage of ribs one thorough six
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Pectoralis Major Insertion
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Crest of greater tubercle of humerus
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Pectoralis Minor Action
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Depresses the scapula, Abducts the scapula, Tilts the scapula anteriorly, Assists in forced inhalation
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Pectoralis Minor Origin
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Third, fourth, and fifth ribs
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Pectoralis Minor Insertion
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Coracoid process of scapula
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Subclavius Action
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Draws clavicle inferiorly and anteriorly, Elevates first rib, Stabilizes the sternoclavicular joint
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Subclavius Origin
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First rib and cartilage
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Subclavius Insertion
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Inferior, lateral aspect of the clavicle
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