The upper part of the trapezius muscle is the primary target of the shoulder shrug. The trapezius is a triangular muscle that makes up the upper back, running from the back of the neck and down along the spine, lying over the shoulder blades.
In general terms, sex refers to the biological differences between males and females, such as the genitalia and genetic differences. Gender is more difficult to define but can refer to the role of a male or female in society (gender role), or an individual's concept of themselves (gender identity).
Gender is a Social Constructionâand Beyond. In the context of people who were already familiar with many of these assumptions, a philosopher colleague recommended a chapter from Georgia Warnkeâs After Identity: Rethinking Race, Sex, and Gender.