Unipolar neuron / Unipolar nerve cells means

Options

A. nerve cell with one dendron
B. nerve cell with many dendrons
C. nerve cell without dendrons
D. neuron with one dendron and one axon

Answer

### Step-by-Step Solution:

1. **Understanding Unipolar Neurons**: Unipolar neurons are a type of neuron characterized by having a single process extending from the cell body. This process typically branches into two parts: one that acts as a dendrite and the other that functions as an axon.

2. **Analyzing the Options**:
- **Option 1**: "Nerve cell with one dendron."
- This option is incorrect because unipolar neurons do not have dendrons; they have a single process that splits into two branches.

- **Option 2**: "Nerve cell with many dendrons."
- This option is also incorrect. Neurons with many dendrites are classified as multipolar neurons, not unipolar.

- **Option 3**: "Nerve cell without dendrites."
- This option is correct. Unipolar neurons do not have traditional dendrites; their single process serves the function of both receiving and transmitting signals.

- **Option 4**: "Neuron with one dendron and one axon."
- This option is incorrect as it describes a bipolar neuron, which has one dendrite and one axon.

3. **Conclusion**: The correct answer is **Option 3: Nerve cell without dendrites**.