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83 Cards in this Set
- Front
- Back
Deltoid Action of All fibers
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Abducts the shoulder (glenohumeral joint)
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Deltoid Action of Anterior fibers
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Flexes the shoulder (g/h joint)
Medially rotates the shoulder (g/h joint) Horizontally adducts the shoulder (g/h joint) |
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Deltoid Action of Posterior fibers
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Extends the shoulder (g/h joint)
Laterally rotates the shoulder (g/h joint) Horizontally abducts the shoulder (g/h joint) |
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Deltoid Origin
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Lateral one-third of clavicle, acromion and spine of scapula
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Deltoid Insertion
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Deltoid tuberosity
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Deltoid Nerve Innervation
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Axillary from brachial plexus
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Trapezius Action of upper fibers - Bilaterally
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Extends the head and neck
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Trapezius Action of upper fibers - Unilaterally
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Laterally flex the head and neck to the same side
Rotates the head and neck to the opposite side Elevates the scapula (scapulothoracic joint) Upwardly rotates the scapula (s/t joint) |
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Trapezius Action of middle fibers
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Adducts the scapula (s/t joint)
Stabilizes the scapula (s/t joint |
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Trapezius Action of lower fibers
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Depresses the scapula (s/t joint)
Upwardly rotates the scapula (s/t joint) |
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Trapezius Origin
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External occipital protuberance
Medial portion of superior nuchal line of the occiput Ligamentum nuchae Spinous processes of C-7 through T-12 |
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Trapezius Insertion
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Lateral one-third of clavicle
Acromion Spine of the scapula |
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Trapezius Nerve Insertion
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Spinal accessory
Cervical Plexus |
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Latissimus Dorsi Action
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Extends the shoulder (glenohumeral joint)
Adducts the shoulder (g/h joint) Medially rotates the shoulder (g/h joint) |
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Latissimus Dorsi Origin
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Spinous processes of last six thoracic vertebrae
Last three or four ribs Thoracolumbar aponeurosis 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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Latissimus Dorsi Nerve Innervation
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Thoracodorsal
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Teres Major Action
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Extends the shoulder (glenohumeral joint)
Adducts the shoulder (glenohumeral joint) Medially rotates the shoulder (g/h joint) |
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Teres Major Origin
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Lateral side of inferior angle of scapula
Lower half of lateral border of the scapula |
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Teres Major Insertion
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Crest of the lesser tubercle of the humerus
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Teres Major Nerve Innervation
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Lower subscapular
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Supraspinatus Action
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Abducts the shoulder (glenohumeral joint)
Stabilizes the head of humerus in glenoid cavity |
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Supraspinatus Origin
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Suptraspinous fossa of the scapula
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Supraspinatus Insertion
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Greater tubercle of the humerus
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Supraspinatus Nerve Innervation
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Suprascapular
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Teres Minor Action
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Laterally rotates the shoulder (glenohumeral joint)
Adducts the shoulder (g/h joint) Extends the shoulder (g/h joint) Horizontally abducts the shoulder (g/h joint) Stabilizes the head of humerus in glenoid cavity |
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Teres Minor Origin
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Superior half of lateral border of the scapula
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Teres Minor Insertion
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Greater tubercle of the humerus
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Nerve Innervation
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Axillary
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Infraspinatus Action
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Laterally rotates the shoulder (glenohumeral joint)
Adducts the shoulder (g/h joint) Extends the shoulder (g/h joint) Horizontally abducts the shoulder (g/h joint) Stabilizes the head of humerus in glenoid cavity |
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Infraspinatus Origin
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Infraspinous fossa of the scapula
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Infraspinatus Insertion
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Greater tubercle of the humerus
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Infraspinatus Nerve Innervation
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Suprascapular
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Subscapularis Action
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Medially rotates the shoulder (glenohumeral joint)
Stabilizes the 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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Subscapularis Nerve Innervation
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Upper and lower subscapular
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Rhomboid Major Action
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Adducts the scapula (scapulothoracic joint)
Elevates the scapula (s/t joint) Downwardly rotates the scapula (s/t joint) |
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Rhomboid Major Origin
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Spinous processes of T-2 to T-5
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Rhomboid Minor Origin
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Spinous processes of C-7 and T-1
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Rhomboid Major Insertion
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Medial border of the scapula between the spine of the scapula and inferior angle
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Rhomboid Minor Insertion
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Upper portion of medial border of the scapula, across from spine of the scapula
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Rhomboid Major Nerve Innervation
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Dorsal Scapular from brachial plexus
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Levator scapula Action - Unilaterally
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Elevates the scapula (scapulothoracic joint)
Downwardly rotates the scapula (s/t joint) Laterally flexes the head and neck Rotates the head and neck to the same side |
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Levator scapula Action - Bilaterally
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Extend 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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Upper region of medial border and superior angle of scapula
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Levator scapula Nerve Innervation
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Dorsal scapular and cervical nerves
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Serratus Anterior Actions with the origin fixed
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Abducts the scapula (scapulothoracic joint)
Depresses the scapula (s/t joint) Holds the medial border of the scapula against the rib cage |
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Serratus Anterior Actions if scapula is fixed
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May act in forced inhalation
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Serratus Anterior Origin
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Surfaces of upper eight of nine ribs
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Serratus Anterior Insertion
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Anterior surface of medial border of the scapula
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Serratus Anterior Nerve Innervation
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Long thoracic
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Pectoralis Major Action of all fibers
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Adducts the shoulder (glenohumeral joint)
Medially rotates the shoulder (g/h joint) Assists in elevating the thorax in forced inhalation (if arm is fixed) |
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Pectoralis Major Action of upper fibers
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Flexes the shoulder (g/h joint)
Horizontally adducts the shoulder (g/h joint) |
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Pectoralis Major Action of lower fibers
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Extends the shoulder (g/h joint)
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Pectoralis Major Origin
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Medial half of clavicle
Sternum Cartilage of first through sixth ribs |
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Pectoralis Major Insertion
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Crest of greater tubercle of humerus
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Pectoralis Major Nerve Innervation
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Medial and lateral pectoral
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Pectoralis Minor Action
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Depresses the scapula (scapulothoracic joint)
Abducts the scapula (s/t joint) Tilts the scapula anteriorly (s/t joint) if scapula is fixed: 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 the scapula
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Pectoralis Minor Nerve Innervation
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Medial pectoral
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Subclavius Action
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Draws clavicle inferiorly
Elevates first rib (to assist in inhalation) 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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Subclavius Nerve Innervation
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Subclavian
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Biceps Brachii Action
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Flexes the elbow (humeroulnar joint)
Supinates the forearm (radioulnar joints) Flexes the shoulder (glenohumeral joints) |
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Biceps Brachii Origin - Short head
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Coracoid process of scapula
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Biceps Brachii Origin - Long head
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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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Biceps Brachii Nerve Innervation
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Musculocutaneous
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Triceps Brachii Action of all heads
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Extends the elbow (humeroulnar joint)
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Triceps Brachii Action of long head
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Extends the shoulder (glenohumeral joint)
Adducts the shoulder (g/h joint) |
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Triceps Brachii Origin - long head
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Infraglenoid tubercle of the scapula
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Triceps Brachii Origin - lateral head
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Posterior surface of proximal half of the humerus
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Triceps Brachii Origin - medial head
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Posterior surface of distal half of the humerus
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Triceps Brachii Insertion
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Olecranon process of the ulna
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Triceps Brachii Nerve Innervation
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Radial
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Coracobrachialis Action
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Flexes the shoulder (glenohumeral joint)
Adducts the shoulder (g/h joint) |
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Coracobrachialis Origin
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Coracoid process of the scapula
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Coracobrachialis Insertion
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Medial surface of mid-humeral shaft
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Coracobrachilalis Nerve Innervation
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Musculocutaneous
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