7 Questions
What is the primary effect of the increased intracellular calcium ion concentration in the axon terminal?
Migration of synaptic vesicles towards the membrane and fusion with it
What is the primary function of the cholinesterase enzyme in the synaptic cleft?
To rapidly hydrolyze Ach into choline and acetic acid
What is the result of the influx of Na ions and efflux of K ions at the postsynaptic membrane?
Local depolarization of the motor end plate
What is the role of the voltage-gated Ca channels in the axon terminal?
To allow the influx of Ca ions into the axon terminal
What is the direction of the movement of the synaptic vesicles in the axon terminal?
Towards the membrane
What is the consequence of the action potential propagating on both sides of the motor end plate?
Contraction of the muscle fiber
What is the binding site of Ach on the postsynaptic membrane?
Specific receptors on the motor end plate
Test your understanding of the process of neurotransmission, from the release of acetylcholine to its binding with receptors on the postsynaptic membrane. Learn how motor neurons transmit signals to muscles and other effectors.
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