(Solved): In the process of muscle contraction, an action potential arrives at the nerve terminal to stimulat ...

In the process of muscle contraction, an action potential arrives at the nerve terminal to stimulate the release of the neurotransmitter acetylcholine through the process of reguiated secretion as shown in the figure below. Acetylcholine then binds to the acetylcholine receptor on the postsynaptic muscle cell, causing muscle cbntraction. Sort each of the following possible changes in the nerve terminal into those that would increase muscle contraction or those that would decrease muscle contraction. RESTING NERVE TERMINAL synaptic cleft neurotransmitter receptor ACTIVATED NERVE TERMINAL Categories Items (4 items) (Drag and drop into the appropriate area below) \begin{tabular}{|c|c|} \hline \begin{tabular}{l} Increase \\ cytosolic ${\mathrm{Ca}}^{2+}$ \\ concentrations \end{tabular} & \begin{tabular}{l} Mutate the \\ specific Rab G \\ protein Rab3 so \end{tabular} \\ \hline & \begin{tabular}{l} it no longer binds \\ GTP and is \\ inactive \end{tabular} \\ \hline \end{tabular} Add botulinum toxin, which cleaves SNARE proteins Add black widow spider venom, which forms pores in the membrane for cations including ${\mathrm{Ca}}^{2+}$