The human body is composed of many different and complicated systems. While they all seem very different, it all works in unison to help you do everyday activities like walking, talking, and thinking. Although all of the human body systems are vital, there are 5 most important human body systems. And those key systems are the nervous system, skeletal system, respiratory system, cardiovascular system, and the digestive system. These major systems work together to keep you alive. In this website I will go over all the crucial parts of the important human body systems. Ill be going over how the spinal cord transmits information to the brain, 4 different types of bone, how air goes into the lungs, the process of blood traveling through heart, where digestion begins and ends, and much more. There is so much to learn about your body, and it’s great to see how sophisticated and amazing the human body is.