At which point is an impulse transmitted between neurons?
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A
Synapse
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B
Dendrite
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C
Ganglion
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D
Axon
An impulse is transmitted between neurons at the synapse.
The synapse is the junction between two neurons, where chemical signals are released from one neuron and received by another. This process allows for the transmission of nerve impulses throughout the nervous system.
A. Synapse
This is the correct answer. The synapse is the gap between two neurons where an electrical impulse in the presynaptic neuron triggers the release of neurotransmitters, which then bind to receptors on the postsynaptic neuron, allowing the signal to continue. The synapse is crucial for communication between neurons.
B. Dendrite
The dendrite is a part of the neuron that receives signals from other neurons. While dendrites are involved in receiving impulses, they are not the point at which impulses are transmitted between neurons. Transmission occurs at the synapse, where the dendrites receive signals.
C. Ganglion
A ganglion is a cluster of nerve cell bodies located outside the central nervous system. Ganglia are involved in processing signals but are not the specific point where impulses are transmitted between neurons. The synapse is the functional site for neuron-to-neuron transmission.
D. Axon
The axon is the long, threadlike part of a neuron that transmits electrical impulses away from the cell body. While the axon carries the impulse along the neuron, the transmission of impulses between neurons occurs at the synapse, not along the axon itself.
Conclusion:
An impulse is transmitted between neurons at the synapse, where neurotransmitters facilitate communication between the presynaptic and postsynaptic neurons. The dendrite, ganglion, and axon are important parts of the neuron, but the synapse is where impulses are transmitted from one neuron to another.

Topic Flashcards
Click to FlipWhere is a nerve impulse transmitted from one neuron to another?
Synapse, the junction between neurons where the signal crosses via neurotransmitters or electrical coupling.
Why is the synapse considered the site of inter-neuronal signal transfer?
Action potential arrives at the axon terminal → triggers neurotransmitter release → binds receptors on the next neuron, continuing the impulse.
What part of the neuron receives impulses but does not transmit them to the next neuron?
Dendrite receives signals from other neurons’ synapses; transmits them toward the cell body, not between neurons
What is a ganglion?
ganglion is a cluster of neuron cell bodies (outside CNS); synapses occur within or near ganglia in some cases, but the transmission point is the synapse.
How does an impulse cross from one neuron to another at the synapse?
Presynaptic terminal releases neurotransmitters → diffuse across synaptic cleft → bind postsynaptic receptors → generate new action potential or graded potential.