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In a closed circulatory system the blood runs through:

AWide body cavity
BLoose open gaps
CClosed vessels
DOpen body spaces
Answer & Solution
Correct answer: C. Closed vessels
1. The blood is kept within a defined circuit. 2. That circuit is built of tubes of varying width. 3. So the blood is circulated through a series of vessels. _Source: syllabus Biology, Chapter 4, Animal Kingdom._
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