The mitral or bicuspid valve,
A. prevents blood from back flowing into the left atrium
B. prevents blood from back flowing into the right atrium
C. prevents the blood from back flowing into the lungs
D. is located between the left atrium and the right ventricle
Answer: A. prevents blood from back flowing into the left atrium
Health Professions
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A vertical angulation of +65 degrees is used for which occlusal radiograph?
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Nontreponemal tests can be used to diagnose all stages of syphilis except
A) primary. B) latent. C) secondary. D) tertiary.
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