Skeletal muscles move bones. A pair of muscles is required to move a bone -- one muscle to straighten the joint, and another to bend the joint.
I like to move back and forth on black sock went i am wiggled
The particles in a solid move back and forth in place.
"Oscillate" means to move back and forth in a regular rhythm.
the particles in a surface water move back- and- forth only.
muscle
solids
Your metacarpals are to let you move your hand back-and-forth and to grab stuff
Bones move by your musclesBones have joints that let them move back and forth, muscles help them move, and you need energy to move your body like healthy How_do_your_bones_move.
Muscles are the body tissue that works with bones to make the body move. They contract and relax to produce movement.
solid
back and forth?
solids