Across
- 3. MUSCLE FOR RESPIRATION THAT ONLY MAMMALS HAVE
- 5. NUMBER OF CHAMBERS IN THE HEART
- 10. HOW MANY NORMAL RESTING BREATHS A PERSON TAKES IN A MINUTE
- 11. LOCATION IN THE HEART WHERE BLOOD RETURNS TO
- 12. ANOTHER TERM IS THE WIND PIPE
- 13. HOW MANY SECONDS IT TAKES FOR BLOOD TO RETURN TO THE HEART
- 14. NORMAL HEART RATE IN A MINUTE
Down
- 1. GAS THAT IS CONSIDERED WASTE
- 2. SYSTEM THAT CIRCULATES BLOOD
- 4. TINY AIR SACS IN THE LUNGS WHERE GAS EXCHANGE TAKES PLACE
- 6. SYSTEM THAT EXCHANGES OXYGEN
- 7. ORGANS FOR GAS EXCHANGE BUT DON'T POSSES MUSCLE
- 8. FLAP THAT COVERS THE TRACHEA WHEN YOU SWALLOW
- 9. A VEIN THAT CARRIES OXYGENATED BLOOD