What is the key property of axon membranes that accounts for their ability to su

Question

What is the key property of axon membranes that accounts for their ability to sustain action potentials? How would each of these scenarios affect action potentials?

1.Voltage-gated Na+ channels are absent

2.Voltage-gated K+ channels are absent

3.Voltage-gated Na+ channels are open for a shorter period of time

4.There is a longer delay before voltage-gated K+ channels open

5.Voltage-gated K+ channels have exactly the same properties as voltage-gated Na+ channels, in terms of latency before opening, open time, and inactivation.

6.Voltage-gated Na+ and voltage-gated K+ channels fail to close once they have opened

7.The Na+/K+ pump is poisoned or ATP is suddenly absent

8.Tetrodotoxin is applied to the neuron

9.NaCl is added to the extracellular fluid

10.KCl is added to the extracellular fluid

Explanation / Answer

1.Voltage-gated Na+ channels are absent

2.Voltage-gated K+ channels are absent

3.Voltage-gated Na+ channels are open for a shorter period of time

4.There is a longer delay before voltage-gated K+ channels open

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.