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How Are Electrical Impulses Transmitted Across Synapses?

Descri ption of what actually occurs when electrical impulses move across synapses.

Date : 02/09/2023

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Uploaded by : Kailavya
Uploaded on : 02/09/2023
Subject : Biology

  1. Action potential opens voltage gated Ca2+ channels

  2. Ca2+ enters presynaptic terminal

  3. causes exocytosis of vesicles

  4. Acetylcholine diffuses across cleft at neuromuscular junction

  5. binds to ACh receptors and induces action potentials in muscle

  6. Local currents flow from polarised region and adjacent region and AP spreads along surface of muscle fibre membrane

  7. ACh broken down by acetylcholine esterase and muscle fibre response to that ACh molecule ceases

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