How many Organ system are there in the Human body ?

Dear Student, 

There are 11 organ systems in the human body and these are:

1. Digestive system
2. Integumentary system
3. Muscular system
4. Skeletal system
5. Nervous system
6. Circulatory system
7. Lymphatic system
8. Respiratory system
9. Endocrine system
10. Excretory system
11. Reproductive system

Regards