The ________ conducts impulses from the AV node to the bundle branches, which lead to the Purkinje fibers.
A. SA node
B. AV valve
C. AV bundle
D. ventricular septum
Answer: C
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Which of the following are descending tracts in the spinal cord?
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The superior mesenteric artery supplies ________
A) the stomach and small intestine B) most of the small intestine and half of the large intestine C) all of the abdominal mesenteries D) the distal half of the large intestine