Post the picture in the comments because I don’t think your picture uploaded
I dont know but it may be urinary system as you need liquid to urinate so that propably includes kidny i am assuming and if you dont get water or get dehydratd and can cuase serous kidney issues thats why i think it is urinary system
Salivary glands are vital glands that produce saliva in order for us to chew and swallow smoothly. The saliva also helps the breaking down of food process.
