Final answer:
The frontal plane, also called the coronal plane, is what divides the body into front and back halves. This is distinct from the midsagittal plane which divides the body evenly into right and left sides and the transverse plane which divides it into upper and lower portions.
Step-by-step explanation:
The plane that divides the body into front and back halves is known as the frontal plane, also referred to as the coronal plane. This plane separates the body into anterior (front) and posterior (rear) portions. While the midsagittal or median plane divides the body into equal right and left halves, and the transverse or horizontal plane cuts it into upper and lower portions, it is the frontal (coronal) plane that distinguishes between the front and the back parts of the body.
Other planes such as the sagittal plane divide the body into right and left sides, and when this plane is not median, creating unequal halves, it is called a parasagittal plane. Finally, when referring to cross-sections that are angled, the term oblique plane is used.