Which of the following statements about skeletal muscle contraction is false? During muscle contraction, the Z...

Question:

Which of the following statements about skeletal muscle contraction is false? During muscle contraction, the Z discs move closer together as the myosin heads move toward the plus ends of the actin filaments. The changes in voltage across the plasma membrane that occur when a muscle cell receives a signal from the nervous system causes Ca2+ to flow into the sarcoplasmic reticulum, triggering a muscle contraction. An action potential in the muscle cell plasma membrane leads to voltage-gated calcium channels opening in the T-tubule membrane. Calcium activates troponin which in turn moves tropomyosin so that it no longer blocks the binding of myosin heads to the actin filament.