During the ________ phase of action potential development,voltage-gated sodium channels are open.
A) repolarization
B) depolarization
C) refractory
D) threshold
Correct Answer:
Verified
Q35: Cross-bridges are portions of
A)actin molecules.
B)myosin molecules.
C)troponin molecules.
D)tropomyosin
Q55: Which of the following is an ion
Q56: When a skeletal muscle fiber contracts,which of
Q57: Membrane potential is
A)a chemical signal that has
Q58: The Na+/K+ ion pump is responsible for
A)diffusing
Q61: Communication between axons and muscle fibers occurs
Q62: A muscle producing tension that peaks but
Q63: Triggering of the muscle action potential occurs
Q64: When calcium ion binds to troponin,
A)tropomyosin moves
Q65: Which statement about excitation-contraction coupling is incorrect?
A)Calcium
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