Question

How do the muscular and skeletal systems work together to allow us to move?

A) Ligaments contract and pull on bones.
B) Muscles contract and cause tendons to pull on bones.
C) Muscles relaxe and cause ligaments to pull on bones.
D) Cartilage relaxes and allows bones to move.

Answer 1

dang, this was 3 years ago- but how is your brothers school now?

Answer 2

i would say it is B because when u pull ur leg up the space in your muscles are smaller when you spread your leg out they relax because they are not pulling anything.