Botulinum toxin causes muscle paralysis because
a. no acetylcholine enters the synaptic cleft
b. sodium is removed from the synaptic cleft
c. the acetylcholine receptors at the motor end-plate are blocked
d. calcium is removed from the neuromuscular junction

Anurse is caring for a client who is receiving a continuous iv infusion of magnesium sulfate for preterm labor. the nurse should discontinue the infusion and prepare to administer calcium gluconate if the client demonstrates which of the following findings? (select all that apply) a. urine output 80 ml in 4 hr b. absence of deep-tendon reflexes c. report of chills d. decreased level of consciousness e. systolic blood pressure 130 mm hg