Which of the following statements about transmission of nerve impulse is incorrect ?

Options

A. Nerve impulse travels from dendritic end towards axonal end
B. At the dendritic end electrical impulses bring about the release of some chemicals which generate an electrical impulse at the axonal end of another neuron.
C. The chemicals released from the axonal end of one neuron cross the synapse and generate a similar electrical impulse in a dendrite of another neuron
D. A neuron transmits electrical impulses not only to another neuron but also to muscle and gland cells

Explanation

To determine which statement about the transmission of nerve impulses is incorrect, we can analyze each statement based on our understanding of how neurons function.

### Step-by-Step Solution:

1. **Understand the Structure of a Neuron**:
- A neuron consists of three main parts: dendrites, cell body, and axon.
- Dendrites receive signals, the cell body processes them, and the axon transmits the signals to the axon terminals.

2. **Analyze the Transmission of Nerve Impulses**:
- The transmission of nerve impulses occurs in the following order:
- Dendrites → Cell Body → Axon → Axon Terminals.
- This means that the nerve impulse travels from the dendritic end towards the axonal end.

3. **Evaluate Each Statement**:
- **Statement 1**: "The nerve impulse travels from dendritic end towards axonal end."
- This is correct as per the established pathway of nerve impulse transmission.

- **Statement 2**: "At the dendritic end, electrical impulse brings about the release of some chemicals."
- This is incorrect. The release of neurotransmitters occurs at the axonal terminal, not at the dendritic end.

- **Statement 3**: "The chemical released from the axonal end of one neuron crosses the synapse and generates a similar electrical impulse in a dendrite of another neuron."
- This is correct. Neurotransmitters released at the axonal terminal cross the synapse to stimulate the next neuron.

- **Statement 4**: "A neuron transmits electrical impulses not only to another neuron but also to muscle and gland cells."
- This is also correct. Neurons can transmit signals to muscles and glands as part of the nervous system's function.

4. **Identify the Incorrect Statement**:
- Based on the analysis, **Statement 2** is the incorrect statement regarding the transmission of nerve impulses.

### Final Answer:
The incorrect statement about the transmission of nerve impulse is: **"At the dendritic end, electrical impulse brings about the release of some chemicals."**