- We breathe in oxygen.
-The diaphragm, the big muscle under the lungs, contracts.
-The ribs expand.
EXHALATION
- We breathe out carbon dioxide.
- The ribs and diaphragm relax.
Welcome to the Lab lil' scientists! Now it's your turn to wonder, think, try, observe, record and discover. Enjoy the science and share your discoveries!;)
No hay comentarios:
Publicar un comentario