090 The Deltoideus Muscle: Origin, Insertion, and Action

Leslie Samuel discusses the deltoidea muscle, a complex intrinsic shoulder muscle. The video covers its origins, insertion, and actions. The origins are opposite to the trapezius muscle's insertion, and the muscle is divided into three parts: anterior, lateral, and posterior. Each part's contraction results in different actions: flexion, abduction, and extension. The video concludes with a review and encourages viewers to visit the website for more resources.

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