What does the transverse plane separate?

The transverse plane separates the body into upper and lower regions. This horizontal plane runs parallel to the ground and divides the body at any point into the superior (upper) portion and the inferior (lower) portion. It is instrumental in understanding human anatomy and movement, particularly when discussing the function of muscles and the relationship between body parts during various activities.

In contrast, the other options relate to different planes of the body. The frontal or coronal plane separates the body into front and back parts, while the sagittal plane divides it into right and left sections. The term "inner from outer parts" does not correspond to a commonly recognized anatomical plane, further emphasizing the accuracy of the transverse plane's role in dividing the body into upper and lower sections. Understanding the functions of these various planes supports effective analysis and application in fitness and movement training.