HUMAN BODY SYSTEMS RESEARCH Circulatory System: Main responsibility of the circulatory system: Diseases and disorders that can occur in the circulatory system: 3 Major Circulatory System Organs/Tissue 1. 2. 3. Respiratory System: Main responsibility of the respiratory system: Diseases and disorders that can occur in the respiratory system: 3 Major Respiratory System Organs/Tissue 1. 2. 3. Nervous System: Main responsibility of the nervous system: Diseases and disorders that can occur in the nervous system: 3 Major Nervous System Organs/Tissue 1. 2. 3. Digestive System: Main responsibility of the digestive system: Diseases and disorders that can occur in the digestive system: 3 Major Digestive System Organs/Tissue 1. 2. 3. Endocrine System: Main responsibility of the Endocrine system: Diseases and disorders that can occur in the Endocrine system: 3 Major Endocrine System Organs/Tissue 1. 2. 3. Musculoskeletal System: Main responsibility of the Musculoskeletal system: Diseases and disorders that can occur in the musculoskeletal system: 3 Major musculoskeletal System Organs/Tissue 1. 2. 3.