This goes to an ad for orthotics but the anatomy lesson is a good one. There are 26 bones in the human foot which are grouped into 7 tarsals, 5 metatarsals and 14 phalanges, for a total of 33 joints, of which 20 are actively articulated
Here is a post that I found important to health education. It shows 8 prominent lung diseases that impede the respiratory system. This is important to show students so they can understand the effects of lack of care for their respiratory system.