Scapulohumeral Muscles

Question 0

Supraspinatus

Answer 0

Origin: Supraspinous fossa of scapula

Insertion: Superior facet of greater tubercle of humerus

Innervation: Suprascapular Nerve (C4, C5, C6)

Question 1

Deltoid

Answer 1

Origin: Lateral third of clavicle, acromion and spine of scapula

Insertion: Deltoid tuberosity of humerus

Innervation: Axillary nerve (C5, C6)

Question 2

Infraspinatus

Answer 2

Origin: Infraspinous fossa of scapula

Insertion: Middle facet of greater tubercle of humerus

Innervation: Suprascapular nerve (C5, C6)

Question 3

Teres Minor

Answer 3

Origin: Middle part of lateral border of scapula

Insertion: Inferior facet of greater tubercle of humerus

Innervation: Axillary nerve (C5, C6)

Question 4

Teres Major

Answer 4

Origin: Posterior surface of inferior angle of scapula

Insertion: Medial lip of intertubercular groove of humerus

Innervation: Lower subscapular nerve (C5, C6)

Question 5

Subscapularis

Answer 5

Origin: Subscapular fossa (most of anterior surface of scapula)

Insertion: Lesser tubercle of humerus

Innervation: Upper and lower subscapular nerves (C5, C6, C7)