Which two joint actions are included in the list of defined terms?

The correct answer includes "elevation and depression," which are fundamental joint actions that describe movements commonly observed in the body. Elevation refers to the upward movement of a body part, while depression denotes the downward movement. These two movements are particularly relevant in the context of the shoulder girdle and jaw, as they describe how these body parts can move in relation to anatomical position.

Understanding elevation and depression is crucial for aquatic fitness professionals because they pertain to a variety of exercises aimed at enhancing upper body strength and mobility. For instance, during aquatic workouts, elevating and depressing the shoulder can effectively engage different muscle groups, contributing to overall fitness and functional movement.

While the other choices present important joint actions, they do not capture the specific focus on elevation and depression within the context of certain exercises and fitness movements.