M3 receptors are present on which of the following?
a. Heart, postganglionic parasympathetic nerves
b. Parasympathetic ganglia, nasal submucosal glands
c. Airway smooth muscle, submucosal glands
d. Postganglionic cholinergic nerves, possible effect on CNS
ANS: C
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It is difficult sometimes to distinguish asystole from very fine ventricular fibrillation; therefore, you must always check:
A. two different leads. B. with the physician to identify. C. the PR interval. D. with two different staff members.
What is the normal extracellular potassium concentration?
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