Rotator Cuff
The four muscles that make up the rotator cuff
Supraspinatus, Infraspinatus, Teres Minor, Subscapularis
Teres minor muscle
The action of rhomboid major
Retraction, downward rotation, and assists with elevation of scapula
The nerve that innervates the Deltoid muscle
Axillary nerve C5, C6
Movements of the Scapula
Elevation/Depression
Protraction/Retraction
Rotation
The muscle(s) innervated by the Suprascapular nerve (C5, C6)
Supraspinatus, Infraspinatus
The borders of the triangular interval
Superior - Teres major
Medial - Triceps brachii, long head
Lateral - shaft of the humerus bone
The nerve innervation of the Levator Scapula
Dorsal Scapular nerve C5, branches from C3 and C4 spinal nerves
medial rotation, extension, and adduction of arm
Name the ANTERIOR muscles that move the GH joint
Biceps brachii, Coracobrachialis, Pectoralis major
The origin and insertion of Subscapularis muscle
Origin: the medial 2/3 of the subscapular fossa
Insertion: lesser tubercle of the humerus
The contents of Triangular space
Circumflex scapular artery and vein
The origin of Pectoralis minor
Anterior surface and superior margin of ribs 3-5 near costal carilage, and fascia of intercostal spaces
The innervation of the muscle that inserts on the floor of the intertubercular groove of the humerus
Thoracodorsal nerve C6, C7, C8
Name the POSTERIOR muscles that move the GH joint
Rotator Cuff muscles, Teres Major, Triceps, Deltoid, Lattisimus Dorsi
The actions of the rotator cuff muscles as a group
Hold the head of humerus in glenoid cavity, Rotate humerus on long axis, Protect the shoulder joint by common musculotendinous sheath, Stabilize shoulder joint by acting as extensile ligament for shoulder motions
The contents of the Quadrangular space
Axillary nerve and posterior humeral circumflex artery
The origin of the muscle that is innervated by the motor accessory nerve CN XI, and proprioception anterior rami of C3, C4
medial 1/3 of the superior nuchal line of the occipital bone, external occipital protuberance, ligamentum nuchae, spinous processes of C7-T12 and related supraspinaous ligaments
The origin of the Triceps brachii
Long head - infraglenoid tubercle of the scapula
Lateral head - posterior surface and lateral border of the humerus proximal to radial groove
Medial head - posterior surface of the humerus distal to the radial groove; medial intermuscular septum
Name the ANTERIOR muscles that fix the scapula
Serratus Anterior, Pectoralis minor, Subclavius
The nerve innervation of the muscle that inserts into the inferior facet of the greater tubercle of the humerus
Borders of the triangle of ausculatation and its significance
Superior border - Trapezius muscle
Inferior muscle - Latissimus dorsi muscle
Lateral border - Vertebral border of scapula
Significance - easier to listen to breath sounds, site of the 6th intercostal space
Innervation and action of Serratus Anterior
Innervation - long thoracic nerve C5-C7
action - scapular retraction, upward rotation by lower fibers, fixes scapula for other muscles, keeps scapula against chest wall
The origin of the muscle that inserts on the lateral lip of the intertubercular groove (crest of greater tubercle of the humerus)
Clavicular head: medial 1/2 of the clavicle (anterior and superior surfaces)
Sternocostal head: lateral 1/2 anterior surface of manubrium and body of sternum; costal cartilages of all true ribs; aponeurosis of external oblique muscle
Gabby's Aunt's dog's name
Gizmo