anterior-posterior axis

The anterior-posterior axis is an imaginary line that runs through the body from front to back. "Anterior" refers to the front side of the body, like your face and chest, while "posterior" refers to the back side, such as your back and spine. This axis helps describe the orientation of body parts and movements in anatomy and biology, allowing us to understand how different regions are positioned relative to each other. It's fundamental in describing the structure and organization of organisms, especially in humans and animals.