Solve this:
Q. Match the column I (various phase of an action potential ) with column II (ionic activity associated ) and choose the correct option.
Column I Column II
A. Resting stage of a neuron I. Opening and then
B. Depolarization phase in the II. All voltage gated sodium and potassium
generation of an action potential. channels are closed.
C. Repolarization phase III. The sodium channels remain opened.
D. Absolute refractory phase. IV. Opening of potassium gates and the rushing of potassium
(a) A -II, B –I, C – IV, D –III
(b) A – I, B – II, C– III, D– IV
(c) A – III, B – IV, C – I, D –II
(d) A– IV, B – II, C–III, D – I
Dear Student
(a) A -II, B –I, C – IV, D –III
At resting stage of neuron, all voltage-gated sodium-potassium channels are closed. Action potential has different stages like depolarization, repolarization and refractory phase. The ionic activity dynamically shifts with the change in stages of an action potential. At depolarization, positive sodium ions rush into nerve cells. At repolarization, potassium gate opens. At absolute refractory phase, sodium channels remain open.
Hope this information will clear your doubts about the topic.
Regards
(a) A -II, B –I, C – IV, D –III
At resting stage of neuron, all voltage-gated sodium-potassium channels are closed. Action potential has different stages like depolarization, repolarization and refractory phase. The ionic activity dynamically shifts with the change in stages of an action potential. At depolarization, positive sodium ions rush into nerve cells. At repolarization, potassium gate opens. At absolute refractory phase, sodium channels remain open.
Hope this information will clear your doubts about the topic.
Regards