Unipolar nerve cell means

Options

A. Nerve cell with one dendron
B. Nerve cell with many dendrons
C. Nerve cell without dendron
D. None of the above.

Answer

### Step-by-Step Solution:

1. **Understanding Unipolar Nerve Cells**:
- Unipolar nerve cells are a type of neuron characterized by having a single process extending from the cell body (soma).

2. **Identifying the Structure**:
- In unipolar neurons, this single process bifurcates into two branches: one that functions as an axon and the other that acts like a dendrite. However, traditionally, unipolar neurons are described as having no true dendrites.

3. **Characteristics of Unipolar Neurons**:
- These neurons are primarily found in invertebrates, such as insects.
- The cell body of unipolar neurons is often located at the periphery of the organism.

4. **Electrically Inactive Part**:
- The part of the neuron that does not participate in electrical signaling is considered electrically inactive.

5. **Choosing the Correct Option**:
- Given the options:
- A) Nerve cell with one dendron
- B) Nerve cell with many dendrons
- C) Nerve cell without dendron
- D) None of the above
- The correct answer is C) Nerve cell without dendron, as unipolar neurons do not possess dendrites in the traditional sense.

### Conclusion:
Unipolar nerve cells are defined as nerve cells that lack dendrons, making option C the correct choice.

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