Red Sweater

sketchfab

The human body is a complex and intricate system that has been studied for centuries. Scientists have made numerous discoveries about the human body, but there is still much to be learned. The human body is made up of many different systems that work together to keep us alive and functioning properly. The skeletal system provides structure and support for the body. It is made up of 206 bones that are connected by joints. The muscles are attached to the bones and help move the body. The nervous system transmits signals from the brain to the rest of the body, allowing us to think, feel, and react. The circulatory system carries oxygen and nutrients to the cells throughout the body. It is made up of the heart, lungs, and blood vessels. The digestive system breaks down food into nutrients that can be absorbed by the body. The endocrine system produces hormones that regulate various bodily functions. The immune system protects the body from disease and infection. It is made up of white blood cells, which fight off invading pathogens. The reproductive system allows for the production of offspring. The integumentary system protects the body from external damage.