The document describes basic human anatomy and physiology. It explains that humans have two lungs that inflate like balloons when the diaphragm contracts. Air enters through the nose and travels through the trachea into the lungs. It also notes that humans have a heart that beats to make blood flow through veins. Finally, it provides a brief overview of the digestive system, stating that food is bitten, chewed and swallowed before entering the stomach and intestines, with waste exiting as poop.

1. Human Systems
1º Mare Nostrum 2014

2. We have 2 lungs

3. lungs are like balloons

4. The Diaphragm inflates the
lungs

5. Air comes in trough the
nose

6. Trough the
trachea and
into the
lungs

7. We also have a heart

8. We have veins

9. Veins carry blood

10. Our heart beats

11. The heart makes blood
flow

12. Living things need food

13. 1st we bite and chew

14. Then we swallow

15. Food goes into the stomach

16. Food goes into the intestines

17. Waste comes out as poop