Shoulder Complex Flashcards
Name the Origin, Insertion, Action, and Innervation of the: Serratus anterior
O: External surface of the lateral region of first nine ribs
I: Entire medial border of the scapula
N: Long thoracic nerve
A: Protraction of scapula, upward rotation, holds scapula firmly against posterior thorax
Name the Origin, Insertion, Action, and Innervation of the: Pec minor
O: Anterior surface of ribs 3-5
I: Coracoid process of the scapula
N: Medial pectoral nerve
A: Depression of the scapula, downward rotation, and anterior tilt
Name the Origin, Insertion, Action, and Innervation of the: Suprasinatus
O: Supraspinatous fossa
I: Greater tubercle of the humerus (superior facet)
N: Suprascapular Nerve
A: Shoulder abduction and stabilization of the GH joint
Name the Origin, Insertion, Action, and Innervation of the: Infraspinatus
O: Infraspinatous fossa
I: Greater tubercle of the humerus (middle facet)
N: Suprascapular Nerve
A: Shoulder ext. rotation and stabilization of the GH joint
Name the Origin, Insertion, Action, and Innervation of the: Teres minor
O: Posterior surface of the lateral border of the scapula near inferior angle
I: Greater tubercle of the humerus (lower facet)
N: Axillary Nerve
A: Shoulder ext. rotation and stabilization of the GH joint
Name the Origin, Insertion, Action, and Innervation of the: Subscapularis
O: Subscapular fossa
I: Lesser tubercle of the humerus
N: Upper and lower subscapular nerves
A: Shoulder internal rotation and stabilization of GH joint
Name the Origin, Insertion, Action, and Innervation of the: Teres major
O: Inferior angle of scapula
I: Crest of the lesser tubercle of humerus
N: Lower scapular nerve
A: Shoulder adduction, extension, internal rotation
Name the Origin, Insertion, Action, and Innervation of the: Levator scapula
O: Transverse processes of C1-C4
I: Medial border of the scapula between superior angle and the root of scapular spine
N: Dorsal scapular nerve
A: Elevation of scapula and downward rotation
Name the Origin, Insertion, Action, and Innervation of the: Rhomboids
O: Ligamentum nuchae and spinous process of C7-T5
I: Medial border of scapula from root of scapular spine to the inferior angle
N: Dorsal scapular nerve
A: Retraction, evaluation, downward rotation
Name the Origin, Insertion, Action, and Innervation of the: Subclavius
O: Near cartilage of the first rib
I: Inferior surface of the clavicle
N: Branch from upper trunk of the brachial plexus
A: Depression of the clavicle
Name the Origin, Insertion, Action, and Innervation of the: Latissimus dorsi
O: Thoraco lumbar facia, spinous processes of lower thoracic and all lumbar vertebrae, posterior crest of the ilium, lower four ribs, and inferior angle of scapula
I: Floor of the intertubicular groove of humerus
N: Thoracodorsal Nerve
A: Shoulder adduction, extension, internal rotation, and scapular depression
Name the Origin, Insertion, Action, and Innervation of the: Coracobrachialis
O: Coracoid process of scapula
I: Medial aspect of the proximal shaft of the humerus
N: Musculocutaneous Nerve
A: Shoulder flexion
Name the Origin, Insertion, Action, and Innervation of the: Deltoids
O: Anterior-Anterior surface of lateral aspect of the clavicle, Middle-Superior-lateral surface of the acromion, Posterior-Spine of the scapula
I: Deltoid tuberosity of the humerus
N: Axillary Nerve
A: Anterior-Flexion, Hor. Adduction, Int. rotation, Abduction of shoulder
Middle-Abduction of shoulder, flexion
Posterior-Extension of shoulder, Hor. Abduction, Ext. rotation
Name the Origin, Insertion, Action, and Innervation of the: Pec Major
O: Clavicular head-Anterior margin of the medial portion of the clavicle, Sternal head-Lateral margin of manubrium and body of sternum and cartilage of first 6-7 ribs
I: Crest of the greater tubercle of humerus
N: CH-Lateral pec nerve, SH-Lateral and medial pec nerves
A: CH-Int. Rotation of shoulder, flexion, Hor. adduction, SH-Hor. Adduction, Int. Rotation, Adduction and Extension, Depression
Name the Origin, Insertion, Action, and Innervation of the: Upper Trapezius
O: Ext. Occipital protuberance, Ligamentum nuchae, and medial portion of superior nuchal line
I: Posterior-superior aspect of lateral third of clavicle
N: Cranial nerve XI
A: Elevation of scapula, upward rotation
Name the Origin, Insertion, Action, and Innervation of the: Middle Trapezius
O: Ligamentum nuchae and spinous processes of C7-T5
I: Medial aspect of the acromion
N: Cranial nerve XI
A: Retraction of scapula
Name the Origin, Insertion, Action, and Innervation of the: Lower Trapezius
O: Spinous processes of T6-T12
I: Upper lip of spine of scapula near medial border
N: Cranial nerve XI
A: Depression of scapula, upward rotation, retraction
Name the Origin, Insertion, Action, and Innervation of the: Biceps brachii
O: Long head- Supraglenoid tubercle of scap, Short head-Coracoid process of scap.
I: Bicipital tuberosity of radius
N: Musculocutaneous Nerve
A: Elbow flexion, forearm supination, shoulder flexion
Name the Origin, Insertion, Action, and Innervation of the: Triceps brachii
O: Long head- Infraglenoid tubercle, Lateral head- posterior aspect of the proximal humerus lateral to the radial groove, Medial head- posterior aspect of the superior humerus medial to the radial groove
I: Olecranon process of the ulna
N: Radial Nerve
A: Elbow extension, Shoulder extension (long head only)
What are the primary EXTERNAL rotators of the shoulder?
Teres minor
Infraspinatus
Posterior deltoid
What are the primary INTERNAL rotators of the shoulder?
Teres major Pec major Subscapularius Lats Anterior deltoid
What are the rotator cuff muscles?
Sits- Supraspinatus Infraspinatus Teres minor Subscapularis
What are the Primary GH joint ADductors?
Teres major
Lats
Pec major
What are the primary GH joint Extensors?
Lats Teres major Pec major Posterior deltoid Long head of triceps
