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Blood travels in how many distinct circuits?

ATen
BTwo
CNine
DSix
Answer & Solution
Correct answer: B. Two
1. One circuit serves the lungs. 2. The other serves the rest of the body. 3. Arteries and veins transport blood in two distinct circuits. 4. So the answer is two. _Source: OpenStax 'Anatomy and Physiology 2e', Ch 20 'The Cardiovascular System: Blood Vessels and Circulation'_
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