The gap between the membranes of two neurons is termed as

Options

A. Synaptic knob
B. Synaptic cleft
C. Cyton
D. Axon hillock

Answer

**Step-by-Step Solution:**

1. **Understanding Neurons**: Neurons are specialized cells in the nervous system that transmit electrical impulses. They consist of various parts, including the cell body (cyton), dendrites, and axons.

2. **Identifying the Gap**: When two neurons communicate, there is a small gap between them. This gap is crucial for the transmission of nerve impulses.

3. **Role of Neurotransmitters**: Neurotransmitters are chemicals released from the presynaptic neuron (the neuron sending the signal) into this gap when an electrical impulse reaches the synaptic knob.

4. **Naming the Gap**: The specific term for the gap between the membranes of two neurons is known as the "synaptic cleft." This is where neurotransmitters travel to bind to receptors on the postsynaptic neuron (the neuron receiving the signal).

5. **Eliminating Incorrect Options**:
- **Synaptic Knob**: This is the part of the presynaptic neuron that releases neurotransmitters, not the gap.
- **Cyton**: This refers to the cell body of a neuron, not the gap.
- **Axon Hillock**: This is the region where the axon connects to the cell body, not the gap.

6. **Conclusion**: The correct answer to the question is "synaptic cleft," as it accurately describes the gap between the membranes of two neurons.

**Final Answer**: The gap between the membranes of two neurons is termed as the **synaptic cleft**.

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