AFAA Personal Trainer Certification Practice Exam 2025 - Free Personal Trainer Practice Questions and Study Guide

The sagittal plane is indeed responsible for dividing the body into right and left portions. This anatomical concept is fundamental in understanding body movements and how they are categorized in relation to different planes. The sagittal plane runs vertically from front to back, and movements that occur within this plane include flexion and extension, such as those performed during bicep curls or squats.

By correctly identifying the sagittal plane's function, you can better comprehend exercise mechanics and how different exercises can target specific muscle groups by moving through either this plane or others. In contrast, other options represent different anatomical planes or functions—such as the transverse plane, which divides the body into upper and lower sections, or the frontal plane that separates front and back—highlighting the importance of being clear about these distinctions in the study of anatomy and exercise science.