In what ways would understanding the body positions directions and planes assist you with tasks related to the musculoskeletal systems?

Because the  musculoskeletal system gives humans the ability to move so you might need to know the positions to see how they used the  musculoskeletal system

be confident on yourself. ignore such fools and move on ; )

the gravitational force on an object increase as the mass of an object also, im not going to report you, but this question should be under the science category, not health