Citation, DOI & article data
The deltoid muscle (also known as deltoideus muscle) is the largest of the shoulder muscles. The muscle is composed of three heads (clavicular, acromial and spinous), although electromyography suggests that there are at least seven control regions that could act independently 1.
- origin: lateral 1/3 of the clavicle, acromion, lateral 2/3 of the scapula spine
- insertion: deltoid tuberosity of the humerus
- innervation: axillary nerve (C5-6)
- arterial supply 2:
- 1. Brown JM, Wickham JB, McAndrew DJ et-al. Muscles within muscles: Coordination of 19 muscle segments within three shoulder muscles during isometric motor tasks. J Electromyogr Kinesiol. 2007;17 (1): 57-73. doi:10.1016/j.jelekin.2005.10.007 - Pubmed citation
- 2. Standring, Susan, and Henry Gray. 2008. Gray's anatomy: the anatomical basis of clinical practice. [Edinburgh]: Churchill Livingstone/Elsevier. http://www.clinicalkey.com/dura/browse/bookChapter/3-s2.0-B9780443066849X5001X