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The muscle I have chosen for my wiki page is the deltoid which is located near the shoulder and upper arm. The deltoid muscle is made up of three parts: acromial, spinal, and clavicular. The deltoid is a thick muscle that gives off the rounded lines a shoulder has and is known to be the major abductor of the arm.

Here is the deltoid muscle in action: https://www.youtube.com/watch?v=FSSGkYrYwqM

In this video you can see that the deltoid muscle is responsible for flexion, internal rotation, abduction, extension, and external rotation of the arm and shoulder.

“11.5 Muscles of the Pectoral Girdle and Upper Limbs - Anatomy and Physiology.” OpenStax, openstax.org/books/anatomy-and-physiology/pages/11-5-muscles-of-the-pectoral-girdle-and-upper-limbs.