An organ system is a group of organs that are working together to perform a specific or number of functions. The human body is consists of 11 organ systems namely the Cardiovascular System, Digestive System, Endocrine System, Integumentary System, Lymphatic System, Muscular System, Nervous System, Reproductive System, Respiratory System, Skeletal System, and Urinary System. Each system has their own responsibility but works hand-in-hand with other systems.
For example, we experience a headache (nervous system) when we are hungry (digestive system) as these systems rely on each other to work properly. Thanks to the organ systems for keeping the human body alive, healthy, and fighting foreign substances that can harm it.