The radius and ulna swivel over each other when you twist your wrist.
They rotate their wrists.
I know the supinator has something to do with the bones being parallel because it allows you to twist your antebrachium side to side.
what two bones are right next to each other
Bones are all connected to one another. They are not connected bone to bone, though. The bones are connected to each other throughout the body by joints.
what keeps our bones from scratching and bumping agaist each other when we move
The joints.
There are two bones in the big toe, and three bones in each other toe.
Muscles are connected to bones via tendons.
Cartilage is a dense, flexible tissue that prevents bones from rubbing on each other.
Bones are attached to each other by ligaments, strong bands of tissue that may be flexible in some motions.(The similar tissues, tendons, connect the muscles to other muscles and to bones.)
they are cousins, and they like each other and enjoy each other at night time
a knee