Which of the following limits a muscle's capacity to be shortened?
A) Bones, which eventually impede further contraction.
B) The overlap of actin and myosin, which eventually causes myosin to push against the Z line.
C) The overlap of actin and myosin, which eventually causes actin to push against the Z line.
D) The water component of fiber cell cytoplasm, which is incompressible.
E) All of the above

Question

Quizplus · Accepted Answer

The overlap of actin and myosin limits a muscle's capacity to be shortened because eventually the myosin heads will push against the Z line and be unable to move any further.

Which of the Following Limits a Muscle's Capacity to Be