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80 Cards in this Set
- Front
- Back
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Trapezius origin |
*external occipital protuberance *superior nuchal line *nuchal ligament *spinous processes C7-T12 |
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Trapezius insertion |
*lateral 1/3 of clavicle *acromion *spine of scapula |
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Trapezius innervation |
*motor fibers: spinal accessory nerve (CN XI) *pain and proprioceptive fibers: C3, C4 spinal nerves |
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Trapezius actions |
*Superior fibers: elevate scapula, superior rotation of glenoid *Middle fibers: retract scapula *Inferior fibers: depress scapula, superior rotation of glenoid |
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Latissimus dorsi origins |
*spinous processes T7-T12 *thoracolumbar fascia *ribs 9-12 *iliac crest |
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Latissimus dorsi insertions |
*floor of intertubercular groove *can attach to inferior scapula and have small accessory actions, but uncommon |
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Latissimus dorsi innervation |
Thoracodorsal nerve (C6, C7, C8) |
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Latissimus dorsi actions |
*extension of arm *adduction of arm *internal rotation of arm |
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Levator scapulae origin |
*posterior tubercles of transverse processes of C1-C4 |
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Levator scapulae insertion |
*superior medial border of scapula |
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Levator scapulae innervation |
*dorsal scapular nerve (C5) |
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Levator scapulae action |
elevates scapula |
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Rhomboid major origin |
spinous processes T2-T5 |
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Rhomboid major insertion |
medial border of scapula, inferior to spine of scapula |
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Rhomboid major innervation |
dorsal scapular nerve (C5) |
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Rhomboid major action |
retract scapula |
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Rhomboid minor origin |
*spinous process C7 and T1 *nuchal ligament |
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Rhomboid minor insertion |
medial border of scapular, superior to spine of scapula |
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Rhomboid minor innervation |
dorsal scapular nerve (C5) |
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Rhomboid minor action |
retract scapula |
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Pectoralis major origin |
clavicular head: *medial 1/2 of clavicle sternocostal head *sternum *costal cartilage ribs 1-6 *aponeurosis of external abdominal obliques |
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Pectoralis major insertion |
lateral lip of intertubercular groove |
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Pectoralis major innervation |
*medial pectoral nerve *lateral pectoral nerve (C5-C8, T1) |
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Pectoralis major action |
*adducts arm *medial rotation of arm Clavicular head only *flexion of arm Sternocostal head only *extension of arm from flexed position |
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Pectoralis mino origin |
ribs 3,4,5 at costochondral joint |
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Pectoralis minor insertion |
coracoid process |
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Pectoralis minor innervation |
medial pectoral nerve (C8, T1) |
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Pectoralis minor action |
stabilizes scapula against thorax |
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Serratus anterior origin |
lateral surfaces of ribs 1-8 |
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Serratus anterior insertion |
anterior medial border of scapula |
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Serratus anterior innervation |
long thoracic nerve (C5, C6, C7) |
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Serratus anterior action |
protracts scapula |
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Subclavius origin |
costochondral joint of first rib |
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Subclavius insertion |
inferior surface of middle 1/3 of clavicle |
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Subclavius innervation |
nerve to subclavius muscle (C5, C6) |
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Subclavius actions |
anchors and depresses clavicle stabilize sternoclavicular joint |
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Supraspinatus origin |
supraspinous fossa |
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supraspinatous insertion |
superior facet of greater tubercle of humerus |
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supraspinatous innervation |
suprascapular nerve (C5, C6) |
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supraspinatous action |
*stabilize GH joint *initiate abduction of arm |
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Infraspinatous origin |
infraspinatous fossa |
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Infraspinatous insertion |
middle facet of greater tubercle of humerus |
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Infraspinatous innervation |
suprascapular nerve (C5, C6) |
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Infraspinatous action |
*stabilize GH joint *external rotation of arm |
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Teres minor origin |
middle part of lateral border of scapula |
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Teres minor insertion |
inferior facet of greater tubercle of humerus |
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Teres minor innervation |
axillary nerve (C5, C6) |
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Teres minor action |
*stabilize GH joint *external rotation of arm |
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Subscapularis origin |
subscapular fossa |
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Subscapularis insertion |
lesser tubercle of humerus |
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Subscapularis innervation |
upper and lower subscapular nerves (C5, C6, C7) |
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Subscapularis action |
*stabilize GH joint *internal rotation of arm |
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Teres major origin |
inferior angle of scapula |
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Teres major insertion |
medial lip of intertubercular groove |
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Teres major innervation |
lower subscapular nerve (C5, C6) |
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Teres major action |
*internal rotation of humerus *adduction of humerus |
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Deltoid origin |
inferior surfaces of *lateral 1/3 of clavicle *acromion *spine of scapula |
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Deltoid insertion |
deltoid tuberosity of humerus |
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Deltoid innervation |
axillary nerve (C5, C6) |
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Deltoid action |
Middle fibers *abduction of humerus Anterior fibers *flexion and internal rotation of humerus Posterior fibers *extension and external rotation of humerus |
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Biceps brachii origin |
long head *supraglenoid tubercle of scapula short head *tip of coracoid process of scapula |
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Biceps brachii insertion |
*bicipital aponeurosis *tuberosity of radius |
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Biceps brachii innervation |
*musculocutaneous nerve (C5, C6, C7) |
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Biceps brachii actions |
*supinates forearm *flexes forearm *small shoulder due to origin: short head resists dislocation at GH joint, small level of flexion at GH |
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Coracobrachialis origin |
*coracoid process of scapula |
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Coracobrachialis insertion |
*middle 1/3 of medial surface of humerus |
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Coracobrachialis innervation |
*musculocutaneous nerve (C5, C6, C7) |
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Coracobrachialis action |
*adduction of humerus *flexion of humerus |
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Brachialis origin |
*distal 1/2 of anterior humerus |
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Brachialis insertion |
*coronoid process of ulna *tuberosity of ulna |
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Brachialis innervation |
*musculocutaneous nerve (C5, C6) |
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Brachialis action |
*flexion of forearm at elbow from any position |
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Triceps brachii origin |
Long head *infraglenoid tubercle of scapula Lateral head *posterior lateral humerus Medial head *posterior medial humerus |
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Triceps brachii insertion |
*olecranon process of ulna |
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Triceps brachii innervation |
*radial nerve (C6, C7, C8) |
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Triceps brachii action |
*extension of forearm *can assist with extension of arm at GHJ, due to origin of long head |
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Anconeus origin |
*lateral epicondyle of humerus |
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Anconeus insertion |
*olecranon process of ulna *posterior surface of ulna |
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Anconeus innervation |
*radial nerve (C7, C8, T1) |
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Anconeus action |
*extend forearm *stabilize elbow joint |
