There are 14 body systems recognized by the ROS. These systems are listet as follows: 1- Constitutional symptoms 2- The eyes 3- The ears, the nose, the mouth and the throat 4- The Cardiovascular system 5- The Respiratory system 6- The Gastrointestinal system 7- The Genitourinary system 8- The Musculoskeletal system 9- The Integumentary/Breast system 10- The Neurological system 11- The Psychiatric system 12- The Endocrine system 13- The Hematologic/lymphatic system 14- The Allergic/immunologic system
