All of the following statements regarding the electrical activity of the heart conduction cell are false except?

Question

19-09-2022
Biology

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All of the following statements regarding the electrical activity of the heart conduction cell are false except?

Answer :

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qwsgreen qwsgreen · Answer 1 · 2022-09-21T13:20:58-04:00

During repolarization, calcium channels close and voltage-gated potassium channels open is the correct answer.

Repolarization is the change in membrane potential that occurs immediately following the depolarization phase of an action potential, which changes the membrane potential to a positive value, and restores it to a negative one. The membrane potential typically recovers to the resting membrane potential during the repolarization phase. Action potentials enter the falling phase as a result of the outflow of potassium (K+) ions. The K+ channel pore's selectivity filter allows the ions to flow through. The open calcium channels pass more calcium ions when the driving force for calcium entry increases during the repolarization of the AP, which causes an increase in calcium influx.