In frog

Options

A. Acetycholine is the only neurotransmitter
B. Noradrenaline is the only neurotransmitter
C. Both acetylcholine and noradrenaline act as neurotransmitters
D. Neither acetylcholine nor noradrenaline acts as neurotransmitter

Answer

To answer the question regarding the neurotransmitters in frogs, we need to analyze the options provided and determine which one is correct based on the information about neurotransmitters in frogs.

### Step-by-Step Solution:

1. **Understanding Neurotransmitters**:
- Neurotransmitters are chemicals that transmit signals across a synapse from one neuron to another neuron or to a target cell.

2. **Identifying the Neurotransmitters in Frogs**:
- In frogs, two important neurotransmitters are acetylcholine and noradrenaline.
- Acetylcholine is known for generating electrical impulses and is involved in the stimulation of the vagus nerve.

3. **Evaluating the Options**:
- **Option 1**: Acetylcholine is the only neurotransmitter.
- This is incorrect because noradrenaline is also present.
- **Option 2**: Noradrenaline is the only neurotransmitter.
- This is incorrect for the same reason; acetylcholine is also present.
- **Option 3**: Both acetylcholine and noradrenaline act as neurotransmitters.
- This is correct as both neurotransmitters are involved in signal transmission in frogs.
- **Option 4**: Neither acetylcholine nor noradrenaline act as neurotransmitters.
- This is incorrect since both are known to function as neurotransmitters.

4. **Conclusion**:
- The correct answer is that both acetylcholine and noradrenaline act as neurotransmitters in frogs. Therefore, the third option is the correct choice.

### Final Answer:
Both acetylcholine and noradrenaline act as neurotransmitters in frogs.

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