Asked by Steven Bivona on May 11, 2024
Verified
What does "B" represent on the diagram?
A) Threshold
B) Depolarization
C) Depolarization phase of action potential
D) Repolarization phase of action potential
Depolarization Phase
The stage in the action potential of a cell in which the cell membrane's charge becomes more positive compared to its resting state.
Action Potential
A rapid rise and subsequent fall in voltage or membrane potential across a cellular membrane due to the flow of ions in and out of the neuron.
Repolarization Phase
A phase in the cardiac cycle where the heart muscle cells return to their resting state by repolarizing their membrane potentials.
- Absorb the details of excitation-contraction coupling and the initiation process.
Verified Answer
SM
shabana MamnoonMay 18, 2024
Final Answer :
C
Explanation :
"B" represents the Depolarization phase of action potential on a diagram illustrating the phases of action potential in a neuron. This phase is characterized by the rapid influx of sodium ions into the neuron, causing the internal charge of the cell to become more positive.
Learning Objectives
- Absorb the details of excitation-contraction coupling and the initiation process.