Structurally olfactory cells are

Options

A. Bipolar neurons
B. Unipolar neurons
C. Multipolar neurons
D. Neurochemically specialized neurons

Answer

**Step-by-Step Solution:**

1. **Understanding Neuron Types**: Neurons can be classified based on the number of processes (poles) that extend from their cell body. The three main types are unipolar, bipolar, and multipolar neurons.

2. **Unipolar Neurons**: These neurons have a single pole from which both the axon and dendrite arise. They are primarily found in the embryonic stage of humans and are not relevant to olfactory cells.

3. **Bipolar Neurons**: Bipolar neurons have two poles: one pole extends into an axon and the other into a dendrite. These neurons are found in specific locations such as the vestibular and cochlear ganglia, as well as in the olfactory epithelium, which is responsible for the sense of smell.

4. **Multipolar Neurons**: Multipolar neurons have multiple poles, with one pole forming the axon and the others forming dendrites. These are the most common type of neuron found in the central nervous system.

5. **Neurochemically Specialized Neurons**: This term refers to neurons that utilize various neurotransmitters and neurotropic factors, but it does not specifically categorize neurons based on their structural characteristics.

6. **Conclusion**: Since olfactory cells are found in the olfactory epithelium and are characterized by having two poles, they are classified as bipolar neurons.

**Final Answer**: Structurally, olfactory cells are bipolar neurons.

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