All of the following represent a complete AC electrical circuit EXCEPT:
a. C battery ? C battery ? wire ? flashlight bulb
b. ESU generator ? bipolar cord ? one prong of bipolar forceps ? tissue ? other prong of bipolar forceps ? bipolar cord ? ESU generator
c. positive (hot) wire ? negative (neutral) wire ? ground source
d. wall plug ? ESU generator ? active electrode pencil ? tissues ? patient ground pad ? ESU generator ? wall plug
a
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The spinal trigeminal nucleus is most analogous to the
a. Substantia gelatinosa b. Substantia nigra c. Dorsal column nuclei d. Ventral horn
What is the advantage of COPD patients breathing through pursed lips during exhalation?
a. Helps the patient focus on breathing. b. Promotes more complete emptying of the lungs. c. Reduces the patient's anxiety level. d. Improves arterial pH levels.