deltoid muscle

MUSCLE	deltoid
Alias
ACTION	Shoulder: - Abduction (Whole) - Flexion (Anterior) - Medial/Internal Rotation (Anterior) - Extension (Posterior) - Lateral/External Rotation (Posterior)
Origin	Lateral 1/3 clavicle Acromion process of scapula Spine of scapula
Insertion	Deltoid tuberosity of humerus
Innervation	Axillary nerve
Nerve Root	C5–C6
Artery	thoracoacromial artery, anterior and posterior humeral circumflex artery

References

↑ Martini, F.H., Nath, J.L., & Bartholomew, E.F. (2015). Fundamentals of Anatomy and Physiology, Tenth Edition, CA: Pearson.
↑ Tortora, G.J. & Derrickson, B. (2017), Principles of ANATOMY & PHYSIOLOGY, 15th Edition. NJ: Wiley.
↑ http://www.anatomyexpert.com/
↑ Wikipedia http://www.wikipedia.org/