Which plane divides the body into anterior and posterior portions?

Which plane divides the body into anterior and posterior portions?

• A. Sagittal plane
• B. Frontal plane
• C. Transverse plane
• D. Longitudinal axis

Answer: (B)

In planes of movement, the front-and-back division of the body is defined by the frontal plane. This plane runs from top to bottom and from side to side, separating the anterior (front) from the posterior (back) parts. It’s perpendicular to the sagittal plane, which splits the body into left and right, and it’s the one that underlies movements like raising the arms to the side (abduction) and bringing them back (adduction). The transverse plane would split the body into upper and lower parts, and the longitudinal axis refers to rotation, not a dividing plane. So the frontal plane is the correct one for anterior-posterior division.

In planes of movement, the front-and-back division of the body is defined by the frontal plane. This plane runs from top to bottom and from side to side, separating the anterior (front) from the posterior (back) parts. It’s perpendicular to the sagittal plane, which splits the body into left and right, and it’s the one that underlies movements like raising the arms to the side (abduction) and bringing them back (adduction). The transverse plane would split the body into upper and lower parts, and the longitudinal axis refers to rotation, not a dividing plane. So the frontal plane is the correct one for anterior-posterior division.