Synapse
A synapse is the small gap between two neurons, or between a neuron and an effector, where the message passes from one cell to another.
Practice This ConceptMain explanation
Teacher explanation
Messages do not jump directly from one neuron to the next. At the synapse, chemicals called neurotransmitters help carry the signal across the gap. This makes the nervous system one-way and controlled. The synapse is important because it allows orderly transfer of messages and prevents random movement of impulses in both directions.
Example
In a reflex action, a message from one neuron is passed across the synapse to the next neuron before the final response reaches the muscle.
Simple analogy
Synapse means signal bridge with a gap.
Common confusion
Many students think the impulse crosses the gap like electricity in a wire. In reality, the gap needs chemical transfer at the synapse.
Exam tip
If a question asks how impulses move from one neuron to another, mention neurotransmitters and the synaptic gap.
Answer writing and exam use
1-mark use
Write the exact meaning of synapse in one clean line.
2-mark use
Define synapse and add one example or condition.
3-mark use
Explain synapse, show the method or example, and mention the common mistake.
Practice this concept with focused MCQs
Open the concept quiz intro first, review the test details, and then start a focused MCQ set from this concept only. Instant score and answer review are live now.
Help improve this page
Found something confusing, incorrect, or missing?