Which plane divides the body into anterior and posterior portions?

The plane that divides the body into anterior (front) and posterior (back) portions is the frontal plane. This anatomical division allows for a clear distinction between the parts of the body located toward the front and those located toward the back. The frontal plane runs vertically from side to side, allowing it to make this division effectively, which is particularly useful in understanding body orientation and referencing locations during anatomical studies or medical assessments.

The other planes mentioned have different functions; for instance, the sagittal plane divides the body into right and left portions, while the transverse plane divides it into upper and lower parts. The term "coronal plane" is often used interchangeably with the frontal plane, but it specifically refers to a vertical plane that passes through the body, producing anterior and posterior sections, which can also lead to some confusion in terminology. Ultimately, the frontal plane provides a clear separation of the body into front and back, fulfilling the requirements of the question.