The endorphins are released immediately following ____________
 | |
 |
the rapid influx of calcium ions along the postsynaptic membrane; |
 |
the rapid influx of calcium ions along the presynaptic membrane; |
 |
the slow influx of calcium ions along the postsynaptic membrane; |
 |
the slow rise of calcium ions within the presynaptic cytoplasm; |
 |
both c and d are correct alternatives; |
INCORRECT - Changes along the postsynaptic membrane have no direct effect on the release of endorphins.
[Review Part 1 of the tutorial] [Review Part 2 (Matching) of the tutorial]