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Multiple Choice
What is the gap between two neurons called?
A
Myelin sheath
B
Node of Ranvier
C
Axon hillock
D
Synaptic cleft
Verified step by step guidance
1
Step 1: Understand the structure of a neuron. Neurons are specialized cells that transmit signals in the nervous system. Key parts include the cell body, dendrites, axon, and synaptic terminals.
Step 2: Learn about the communication between neurons. Neurons communicate through synapses, which are junctions where the axon terminal of one neuron meets the dendrite or cell body of another neuron.
Step 3: Define the term 'synaptic cleft.' The synaptic cleft is the small gap between the presynaptic neuron (sending the signal) and the postsynaptic neuron (receiving the signal). This gap is where neurotransmitters are released to transmit the signal.
Step 4: Differentiate the synaptic cleft from other terms provided in the question. The myelin sheath is a protective covering around the axon, the Node of Ranvier is a gap in the myelin sheath, and the axon hillock is the region where the axon connects to the cell body. None of these terms describe the gap between neurons.
Step 5: Conclude that the correct term for the gap between two neurons is the synaptic cleft, as it is the space where neurotransmitters facilitate communication between neurons.