Ribs
Muscles that move bones are called Smooth muscle cells or Skeletal muscles
He goes up and down because he is breathing. Compare: Our chests goes in and out when we breath lizards go up and down when they breath
All muscles can move, but only skeletal muscles are voluntary. The cardiac and the smooth muscles cannot be moved by your will, but skeletal muscles can be.
musculoskeletal system
Hinge bones are called hinge bones because they resemble hinges that are on a door. They move on one level like elbow or knee movement.
crepitation
Bones makes us move, if we have no bones we can't move...
Muscles move bones.
with a lot of help you need muscles to pull on bones so that you can move
Depends on how they move... depending on if they have wings or legs. Usually things with bones are faster but there are insects that are faster than boned animal. Maybe its because the bones weigh down the animal more so they can't go as fast or as long
bones dont move BUT if you break a bone or fracture it or ... you know they can move but not usually
There are animals that can move their bodies without bones, for instance worms and insects have no bones.