Transcutaneous electrical nerve stimulation (TENS) reduces pain by which of the following mechanisms?
A) Efferent fibers are blocked by continuously applied high-intensity stimulation.
B) Pain is prevented from traveling from the uterus to spinal cord synapses.
C) Electrical impulses are created that interfere with nerve transmission.
D) TENS reduces apprehension and thereby complements narcotic action.
Question 2
In early pregnancy, a woman is scheduled for a sonogram for detection of the gestational sac. As part of your instructions prior to this study, you would tell her
A) not to drink any fluid 1 hour prior to the study.
B) to be prepared for a catheter to be inserted prior to the study.
C) to empty her bladder just prior to the study.
D) to drink a large amount of fluid prior to the study.
Conduction of pain impulses.
Optic nerve, optic chiasm, ¬thalamus, and visual cortex.
Electrical charge of the inner and outer regions of nerve cells
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