Which of the following would allow a greater range of motion around a joint?

A - Having the insertion point of the muscle to be very close to the joint

B - Having the insertion point of the muscle to be as far as possible from the joint

C - Having very short fascicles

D - Both B and C are correct

E - Range of motion is not related to the point of muscle insertion or fascicle length



I've read the book and have eliminated both option D and E. I'm pretty positive that the correct answer is A, but I don't know.Which of the following would allow a greater range of motion around a joint?A is correct.



Muscles connecting close to the joint do have to contract harder to move the joint, but this is easy compared to how much they would have to stretch when the joint is completely opened if the insertion point was far way. Close your elbow joint, put a rubber band in your hand and stretch one end to your shoulder and hold it there with your other hand. Open up your elbow joint and see how tight that rubber band gets. Now move the end of the band from your shoulder to the just above the crease on the inside of your elbow and see how much easier it is to open your elbow joint.