Which plane divides the body into front and back portions?

The plane that divides the body into front and back portions is the frontal plane, also known as the coronal plane. This anatomical plane runs vertically and separates the body into anterior (front) and posterior (back) sections. It is crucial for understanding human movement and exercise, as many exercises and physical activities can be analyzed in relation to this division.

In contrast, the sagittal plane divides the body into left and right portions, which is particularly relevant for movements that occur in a forward or backward direction, such as walking or running. The transverse plane, on the other hand, divides the body into upper and lower parts, often associated with rotational movements, while the horizontal plane refers more generally to divisions that involve levels, but does not specifically describe the front and back orientation. Therefore, the frontal plane is the most accurate option for this question.