I keep getting “Double circulation” questions wrong in Body Fluids & Circulation. What's the trap?
thinking humans have single circulation like fish.
The usual trap: thinking humans have single circulation like fish. How to avoid it: pulmonary (to lungs) + systemic (to body) = double circulation. Go back to the definition — blood passes through the heart twice in one complete circuit — once to the lungs, once to the body.
Key point
Double circulation
Common mistake
thinking humans have single circulation like fish.
Memory tip
pulmonary (to lungs) + systemic (to body) = double circulation.
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