Question

Identify each of the definitions or examples as depolarization or hyper polarization:

1. decrease in the membrane potential
2. inside of the cells becomes more positive
3. membrane potential becomes more negative than the resting potential
4. increase in the membrane potential
5. inside of the cell becomes more negative
6. a decrease in the extracellular concentration of potassium
7. an increase in the number of sodium leak channels

Answer 1

The concepts of depolarization and hyperpolarization relate to changes in a neuron's membrane potential. Depolarization typically involves the inside of the neuron becoming less negative (more positive), often due to sodium ions entering the cell. Hyperpolarization occurs when the neuron becomes more negative, either due to potassium ions leaving the cell or chloride ions entering it.

Step-by-step explanation:

In neuroscience, understanding the difference between depolarization and hyperpolarization is crucial for grasping how neurons communicate. Here's a breakdown of the concepts matched with your list:

1. Hyperpolarization: Decrease in the membrane potential.
2. Depolarization: Inside of the cell becomes more positive.
3. Hyperpolarization: Membrane potential becomes more negative than the resting potential.
4. Depolarization: Increase in the membrane potential.
5. Hyperpolarization: Inside of the cell becomes more negative.
6. Hyperpolarization: A decrease in the extracellular concentration of potassium.
7. Depolarization: An increase in the number of sodium leak channels.

Each event contributes to the complex signaling processes that define neuronal activity.