Refer to the graphs showing action potentials occurring in response to multiple excitatory postsynaptic potentials (EPSPs). In graph A, the action potential is due to
A) the action of each EPSP, which raises the membrane potential above its threshold.
B) the spatial summation of several simultaneous EPSPs.
C) the number of synapses on the cell body.
D) the rapid succession of EPSPs at one synapse.
E) the lack of inhibitory synapses.

Question

Refer to the graphs showing action potentials occurring in response to multiple excitatory postsynaptic potentials (EPSPs).  In graph A, the action potential is due to
A) the action of each EPSP, which raises the membrane potential above its threshold. 
B) the spatial summation of several simultaneous EPSPs. 
C) the number of synapses on the cell body. 
D) the rapid succession of EPSPs at one synapse. 
E) the lack of inhibitory synapses.

Quizplus · Accepted Answer

The Answer of Refer to the graphs showing action potentials occurring in response to multiple excitatory postsynaptic potentials (EPSPs).  In graph A, the action potential is due to
A) the action of each EPSP, which raises the membrane potential above its threshold. 
B) the spatial summation of several simultaneous EPSPs. 
C) the number of synapses on the cell body. 
D) the rapid succession of EPSPs at one synapse. 
E) the lack of inhibitory synapses.

Refer to the Graphs Showing Action Potentials Occurring in Response