The receptors of neurotransmitters are present on/in the

Options

A. Pre - synaptic membrane
B. Synaptic cleft
C. Post-synaptic membrane
D. lon channels

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where the receptors for neurotransmitters are located. Neurotransmitters are chemical messengers that transmit signals across a synapse from one neuron to another.

2. **Identifying the Components**: In the context of a synapse, we have:
- **Presynaptic Neuron**: The neuron that releases the neurotransmitter.
- **Postsynaptic Neuron**: The neuron that receives the neurotransmitter.
- **Synaptic Cleft**: The gap between the presynaptic and postsynaptic neurons.
- **Ionic Channel**: Protein structures that allow ions to pass through the membrane.

3. **Analyzing the Options**:
- **Presynaptic Neuron**: This neuron releases neurotransmitters but does not have receptors for them.
- **Synaptic Cleft**: This is just the space between neurons; it does not contain receptors.
- **Postsynaptic Neuron**: This neuron has specific receptors that bind to neurotransmitters released from the presynaptic neuron.
- **Ionic Channel**: While ionic channels are involved in the transmission of signals, they are not the sites where neurotransmitters bind.

4. **Conclusion**: The receptors for neurotransmitters are specifically located on the postsynaptic neuron. These receptors are crucial for the transmission of signals from one neuron to another.

5. **Final Answer**: The receptors of neurotransmitters are present on/in the **postsynaptic neuron**.

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