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).
by Andrew. Boyfriend vs Husband. Boyfriend and Husband are two words that the girls are interested in. Selecting a boyfriend and husband is quite different and both of these are different from each other. To know about the difference between a boyfriend and husband, continue reading this article. Boyfriend. Boyfriend is a term used to describe a person who is the regular companion of a female in a romantic relationship. Boyfriends are male companions who are not committed in a relationship for a long term.