Digestion and Respiration

Digestion and Respiration are the most activity our body in involved in to keep our body cells alive. We have a separate section about human cells.

Bunch of good videos on Youtube. These are ones I found helpful:

Respiration: Respiratory system consists of taking air from the nose all the way to the lungs an then back out from the nose.

 

Digestion: Digestive system consists of taking food via the mouth, all the way to stomach and then excreted out.