The axon terminals of nerves contains

Options

A. synaptic vesicles
B. dendrites
C. Myelin sheath
D. axon hillock

Answer

To solve the question "The axon terminals of nerves contains," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Neuron Structure**:
- Neurons consist of three main parts: the cell body (soma or cyton), dendrites, and axons. The axon is a long fiber that transmits signals away from the cell body.

2. **Identifying Axon Terminals**:
- The axon branches at its end, forming structures known as axon terminals. These terminals are crucial for communication between neurons.

3. **Function of Axon Terminals**:
- Axon terminals play a key role in transmitting signals to other neurons or target cells. They do this by releasing chemical messengers.

4. **Contents of Axon Terminals**:
- The axon terminals contain synaptic vesicles. These vesicles are small membrane-bound structures that store neurotransmitters.

5. **Key Neurotransmitter**:
- One of the most important neurotransmitters found in these synaptic vesicles is acetylcholine (ACh). This neurotransmitter is vital for transmitting signals across synapses.

6. **Eliminating Incorrect Options**:
- Other options such as dendrites, myelin sheath, and axon hillock do not contain neurotransmitters. Dendrites receive signals, myelin sheath insulates the axon, and axon hillock is the region where the axon connects to the cell body.

7. **Conclusion**:
- Therefore, the correct answer to the question is that axon terminals contain **synaptic vesicles**.

### Final Answer:
The axon terminals of nerves contain **synaptic vesicles**.

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