When you go to the doctor for an illness, the doctor asks you how you feel. You describe all your symptoms. Then, the doctor makes hypotheses about which organ system is having problems. Drag each set of complaints below to the organ system most likely to be having problems.

stomach ache, gassy, no appetite sneezing all the time, runny nose, trouble breathing, coughing having a very hard time remembering people's names, feeling sad and anxious seem to be catching every disease that comes around, taking a long time to get better Respiratory system
Nervous system
Immune system
Digestive system