A polarized neuron is said to be in

Options

A. (a) Action potential
B. (b) Resting potential
C. (c) Conducting stimulus
D. (d) None of these

Answer

**Step-by-Step Solution:**

1. **Understanding Polarization in Neurons:**
- A polarized neuron refers to a neuron that is not currently transmitting an electrical signal. In this state, the inside of the neuron is negatively charged compared to the outside.

2. **Resting Membrane Potential:**
- The resting membrane potential is the difference in charge across the neuronal membrane when the neuron is at rest. This potential is typically around -70 mV, indicating that the inside of the neuron is more negative than the outside.

3. **Ion Distribution:**
- In a polarized neuron, there is a higher concentration of sodium ions (Na+) outside the neuron and a higher concentration of potassium ions (K+) inside the neuron. This uneven distribution of ions contributes to the resting membrane potential.

4. **Inactive State of the Neuron:**
- When a neuron is polarized, it is in an inactive state, meaning it is not sending any impulses or signals. This is crucial for the neuron to be ready to respond to stimuli when they occur.

5. **Identifying the Correct Answer:**
- From the options provided, the correct answer is "resting potential." Other options like "action potential" or "conducting stimulus" refer to states when the neuron is active and transmitting signals.

**Final Answer:**
- A polarized neuron is said to be in a **resting potential**.

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