Action potentials in contractile cardiac muscle cells

A. are much faster than action potentials in skeletal muscle.
B. have no plateau phase.
C. involve voltage-gated calcium ion channels.
D. have sodium ion channels that open and cause repolarization.
E. have all of these characteristics.


Ans: C. involve voltage-gated calcium ion channels.

Biology & Microbiology

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Explain why Mendel's work was groundbreaking

What will be an ideal response?

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GABA receptors play an essential role in neurotransmission in the central nervous system. In response to the appropriate signal, these receptors open up and allow Cl- to flow into the cell. Given this information, GABA receptors can be classified as a

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