Answer:
Step-by-step explanation:
Humans and other mammals have many organ systems. An example of an organ system is the circulatory system, which includes the heart, arteries, veins, and capillaries. The human body has 11 different organ systems. This figure depicts the respiratory system. Body systems are groups of organs and tissues that work together to perform important jobs for the body. Other organs and tissues serve a purpose in only one body system. Examples include the respiratory system, nervous system, and digestive system.