The sagittal plane divides the body into which of the following?

The sagittal plane is a vertical plane that runs from the front to the back of the body, dividing it into left and right sections. This terminology is crucial in anatomy and physiology, as it helps to describe the location of body structures and their relationships to one another. When discussing movements or positions in the body, the sagittal plane is important for understanding lateral movements, as well as directional terms like "medial" (toward the midline) and "lateral" (away from the midline).

In contrast, the other options describe different anatomical planes or orientations. The upper and lower parts are divided by the transverse plane, the front and back parts correspond to the coronal (or frontal) plane, and the inner and outer parts do not relate to a standard anatomical plane used in medical terminology. This distinction is key for proper communication in health and medical settings, ensuring clarity in discussions about anatomy and physical assessments.