Define line of action
A) The line of action is the direction a bone is pulled towards.
B) The line of action is the line of force produced when a muscle contracts.
C) The line of action is the name for all the muscles that lie parallel to the bone.
D) The line of action is the position of the fulcrum in a first-class lever.
E) The line of action is the name for all the muscles that permit a particular action.
Answer: B
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