Biology · Human Circulatory System
The human circulatory system is characterized as a closed, double circulation system. What does double circulation imply?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Arteries and veins are not connected through capillaries.
- 2Blood flows through the heart twice in one complete cycle — once to the lungs and once to the body.✓
- 3Blood circulates freely in the open body cavity.
- 4Blood flows only once through the heart in one complete cycle.
Correct answer
Blood flows through the heart twice in one complete cycle — once to the lungs and once to the body.
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