Which of the following is NOT one of the three main planes of the body?

• A. Frontal/coronal plane
• B. Transverse/axial plane
• C. Sagittal/lateral plane
• D. Oblique plane

Answer: (D)

The oblique plane is not considered one of the three main anatomical planes of the body. The three primary planes are the frontal (or coronal) plane, which divides the body into anterior (front) and posterior (back) sections; the transverse (or axial) plane, which separates the body into superior (upper) and inferior (lower) parts; and the sagittal (or lateral) plane, which splits the body into left and right sections.

While the oblique plane does exist and is used to describe sections at an angle to the other planes, it is not one of the fundamental planes that are typically used in anatomical descriptions. Understanding the three main planes is essential in anatomy, as they provide a framework for describing locations and movements of body parts.