Scapulohumeral Muscles Flashcards
Supraspinatus
Origin: Supraspinous fossa of scapula
Insertion: Superior facet of greater tubercle of humerus
Innervation: Suprascapular Nerve (C4, C5, C6)
Deltoid
Origin: Lateral third of clavicle, acromion and spine of scapula
Insertion: Deltoid tuberosity of humerus
Innervation: Axillary nerve (C5, C6)
Infraspinatus
Origin: Infraspinous fossa of scapula
Insertion: Middle facet of greater tubercle of humerus
Innervation: Suprascapular nerve (C5, C6)
Teres Minor
Origin: Middle part of lateral border of scapula
Insertion: Inferior facet of greater tubercle of humerus
Innervation: Axillary nerve (C5, C6)
Teres Major
Origin: Posterior surface of inferior angle of scapula
Insertion: Medial lip of intertubercular groove of humerus
Innervation: Lower subscapular nerve (C5, C6)
Subscapularis
Origin: Subscapular fossa (most of anterior surface of scapula)
Insertion: Lesser tubercle of humerus
Innervation: Upper and lower subscapular nerves (C5, C6, C7)