1 Arthropoda classes& characteristics 
2 Why do we study insects or Insects effects on Health &Enviroment
3+4 Insect body regions &Head+mouthparts+anttenae
5 Thorax
6 Abomen
7 Internal systems
8 The ways in which arthropods may affect the health
9 Mosquitoes & Diseases
10 House fly & Diseases
11 cockroach +human flea+Bed Bug