what is the difference between muscles origin and insertion
Best Answer: Muscle origin is the location of the muscle attachment to the bone. Muscle insertion describes on which bone of a joint a muscle end attaches. Origin is where the muscle starts its growth in a fetus. Insertion is where it inserts into a tendon, connective tissue, or whatever...So each muscle will have one side that is the origin and the other side that is the insertion. The origin of a muscle is the point where it is attached to an immovable bone.