Lab 16: Cardiac Muscle Action Potential

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7 Terms

1
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The pacemaking electrical impulses originate from myocytes called:

 

SA node

2
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What allows the electrical coupling of neighboring contractile myocytes?

 

gap junctions

3
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Funny channels are part of:

 

conduction myocytes

4
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Contractile and conduction cells have different forms of action potentials.

True

5
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At the resting membrane potential of a contractile myocyte, the inside of the plasma membrane is

negative

6
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What ion is primarily responsible for maintaining the contractile myocytes prolonged contraction phase?

Calcium

7
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Evaluate the following statement:

Because the heart generates its own electrical stimulation, it can continue to beat for a short time after being removed from the body.

True