Blood Loop Rescue

Answer six questions to send one brave blood cell through the whole body loop!

Grown-up tip: Tap Listen anytime. There is no penalty for a wrong answer—look again and try!
Question 1 / 6
🫀
Heart
🛣️
Artery
🫁
Oxygen
🔬
Trade
↩️
Vein
💓
Home
🏆

The blood loop is complete!

6 / 6 Blood-Loop Stops

You delivered oxygen and brought the blood cell home!