What term refers to the action of turning a body part inward?

The term that refers to the action of turning a body part inward is inversion. Inversion specifically describes the movement of the foot, where the sole turns inward towards the midline of the body. This action is important in various physical activities and can significantly affect balance and stability.

Understanding inversion is crucial in fields such as sports medicine and rehabilitation, as it often relates to injuries like ankle sprains, where the foot may roll inward excessively.

Flexion and extension refer to bending and straightening movements, respectively, while adduction involves moving a body part toward the midline of the body. These terms describe different types of movements but do not refer to the inward rotation characteristic of inversion.