Respuesta :
Answer:Alot than we can imagin
Explanation:
See we have our knee bone as many call it and the are joint so they are litterally working together to help us bend out knees and walk without them ot might be impossible
Answer:
Skeletal muscles only pull in one direction. For this reason they always come in pairs. When one muscle in a pair contracts, to bend a joint for example, its counterpart then contracts and pulls in the opposite direction to straighten the joint out again.
Explanation: