Posterior Deltoid

Question 1

Posterior Deltoid (ORIGIN)

Answer 1

Spine of the scapula

Question 2

Posterior Deltoid (INSERTION)

Answer 2

Deltoid tuberosity of the humerus

Question 3

Posterior Deltoid (INNERVATION)

Answer 3

Axillary nerve (C5, C6)

Question 4

Posterior Deltoid (BLOOD SUPPLY)

Answer 4

Posterior circumflex humeral artery and the deltoid branch of the thoracromial artery

Question 5

Posterior Deltoid (ACTION)

Answer 5

Extends and laterally rotates the arm