Question

The following is a series of events that occur during an action potential. They appear in no particular order. In the space provided, can you place these events in the correct order of occurrence from beginning to end. Please use the letters in front of each event.

A - A wave of depolarization moves down the neuron
B - The Na+/K+ pump takes over again, pumping Na+ out across the membrane and pumping K+ ions in.
C - Sodium channels in the neural membrane open
D - A neuron receives a stimulus
E - As the wave of depolarization passes, the Na+ channels close and K+ channels open
F - The neurons return to a resting state
G - Sodium ions flow into the neuron, causing the inside of the neuron to become positively charged

Answer 1

The proper sequence for events during an action potential starts with a neuron receiving a stimulus and ends with the Na+/K+ pump restoring ion balance after the signal has been transmitted.

Step-by-step explanation:

An action potential is a critical event in neuron communication, involving a series of steps that propagate an electrical signal along the neuron's membrane. Here's the sequence of events in an action potential, in the correct order:

1. D - A neuron receives a stimulus.
2. C - Sodium channels in the neural membrane open.
3. G - Sodium ions flow into the neuron, causing the inside of the neuron to become positively charged.
4. A - A wave of depolarization moves down the neuron.
5. E - As the wave of depolarization passes, the Na+ channels close and K+ channels open.
6. F - The neurons return to a resting state.
7. B - The Na+/K+ pump takes over again, pumping Na+ out across the membrane and pumping K+ ions in.

This sequence ensures the one-way transmission of the nerve impulse, leading to effective communication between neurons.