SMR17-094

sketchfab

The human body is made up of various systems that work together to keep it functioning properly. The skeletal system provides a framework for the body's structure and supports its weight. It also protects vital organs such as the brain, heart, and lungs. The muscular system enables movement by contracting and relaxing muscles. This allows humans to walk, run, lift objects, and perform other physical activities. The nervous system transmits signals throughout the body using electrical and chemical impulses. It controls functions such as movement, sensation, and cognition. The circulatory system transports oxygen and nutrients to cells and removes waste products. It is made up of the heart, blood vessels, and blood. The digestive system breaks down food into nutrients that can be absorbed by the body. It includes organs such as the mouth, esophagus, stomach, small intestine, and large intestine. The respiratory system brings oxygen into the lungs and expels carbon dioxide. It is made up of the nose, throat, trachea, bronchi, and lungs. These systems interact with each other to maintain homeostasis, which is a stable internal environment that allows the body to function properly.