View the animation below, then complete the quiz to test your knowledge of the concept.

1	The force of contraction is greatest for a muscle fiber...
	A)	at 100% of its relaxed length.
	B)	less than 100% of its relaxed length.
	C)	greater than 100% of its relaxed length.
	D)	A and B.
	E)	B and C.
2	The force of contraction is lowest for a muscle fiber...
	A)	at 100% of its relaxed length.
	B)	less than 100% of its relaxed length.
	C)	greater than 100% of its relaxed length.
	D)	A and B.
	E)	B and C.
3	The rate of change of percent maximum tension for muscle fibers is greatest from...
	A)	60% - 80% of relaxed length.
	B)	80% - 100% of relaxed length.
	C)	100% - 120% of relaxed length.
	D)	120% - 140% of relaxed length.
	E)	140% - 160% of relaxed length.
4	The muscle fiber length and the amount of force exhibited by the muscle fiber are inversely proportional when the muscle fiber is longer than its relaxed length.
	A)	True
	B)	False
5	The muscle fiber length and the amount of force exhibited by the muscle fiber are directly proportional when the muscle fiber is shorter than its relaxed length.
	A)	True
	B)	False