The structure that prevents backflow of blood is the
A) superior vena cava. B) papillary muscle.
C) valve. D) trabeculae carnae.
C
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The secondary affected channels are those channels that are _____________
a. closest to the area of pain b. affected by compensation c. distant from the pain but have just as much pain d. None of the above
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________ anesthesia can be used in a small, superficial area of skin and subcutaneous tissue or in an entire region of the body, such as during spinal anesthesia
A. Regional C. Continuous B. Epidural D. Nerve
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