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.
Electrocardiography. (a) Electrodes are placed on the patient’s chest to record the electrical event
Nerve ending scanned by electron micrograph
A genetic bottleneck reduces a population temporarily to very low levels, removing much of its genet
Cross Section of Skin and Free Nerve Endings
Meditation Reduces Negative Emotions
As a nerve impulse arrives at the synapse, it triggers the release of a chemical neurotransmitter fr