Why does unidirectional transmission of a nerve impulse occurs through a chemical synapse?
Text Solution
Verified by ExpertsD
• Transmission of nerve impulse across a chemical synapse is unidirectional.
• This is because:
• Presynaptic neurons (axon terminals) release neurotransmitters (e.g., acetylcholine, dopamine).
• Postsynaptic neurons (dendrites/cell body) contain receptors that bind these neurotransmitters.
• Since neurotransmitters are only released from axon terminals, the impulse cannot travel backward from dendrites to axons.
Hence, nerve impulses move in one direction only across a chemical synapse.
──────────────────────────────────────────────────────────────────────────────────────────
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems