The gap between two communicating neurons is termed:

• A. Node of Ranvier
• B. Synaptic cleft
• C. Myelin sheath
• D. Axon hillock

Answer: (B)

Verified step by step guidance

1. Understand the structure of a neuron: A neuron is composed of a cell body (soma), dendrites, and an axon. Neurons communicate with each other through specialized structures.
2. Learn about the synapse: The synapse is the junction between two neurons where communication occurs. It consists of the presynaptic terminal, synaptic cleft, and postsynaptic membrane.
3. Define the synaptic cleft: The synaptic cleft is the small gap between the presynaptic neuron (sending signal) and the postsynaptic neuron (receiving signal). Neurotransmitters are released into this gap to transmit signals.
4. Differentiate from other terms: The Node of Ranvier is a gap in the myelin sheath along the axon, the Myelin sheath is an insulating layer around the axon, and the Axon hillock is the region where the axon connects to the cell body.
5. Conclude that the correct term for the gap between two communicating neurons is the synaptic cleft, as it is the specific structure facilitating signal transmission.