What would result from a lack of extracellular calcium ions at the neuromuscular junction?
A.
Excessive synaptic vesicles would fuse and release too much ACh, overstimulating the myofiber.
B.
Synaptic vesicles would fail to fuse and ACh would not be released.
C.
Nothing would happen because extracellular calcium does not play a role in muscle stimulation.
D.
The neuron must use its intracellular calcium to make the vesicles fuse.
E.
Potassium ions are used in place of calcium to ensure the vesicles fuse.
B
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Why were humans unaware of microorganisms for most of their history?
What will be an ideal response?
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