Question

During contracion of heart muscle celis _________
a. calcium is prevented from entering cardiac fibers that have been stimulated
b. the action potential is prevented from spreading from cell to cell by gap junctions
c. some calcium enters the cell from the extracellular space and triggers the release of larger amounts of calcium
d. the action potential is initiated by voltage-gated slow calcium channels

Answer 1

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During contraction of heart muscle cells C) some calcium enters the cell from the extracellular space and triggers the release of larger amounts of calcium

Answer 2

Answer:

C Is the correct answer