Quantal analysis shows that a single action potential at the neuromuscular junction causes an EPSP of 40 mV or more, compared to only a few tenths of a millivolt at many CNS synapses. What accounts for this difference? Choose the correct option
A larger number of synaptic vesicles releasing neurotransmitter at the neuromuscular junction compared with CNS synapses
Explanation:
A synapse is a junction between two neurons or a neuron and a muscle cell in which a neurotransmitter is released.
In this way, a chemical signal can be passed on from one cell to another.
In the central nervous system, the number of neurotransmitters being released into the synapse is lesser as compared to the ones being released in the neuromuscular junction.
As a greater number of neurotransmitters are being released the excitatory potential of these neurotransmitters will be summed up to a greater extent as compared to the central nervous system and hence, the value of EPSP is greater.
