HW 9

sketchfab

The human body is a complex system that has been studied extensively by scientists and researchers. The human brain is responsible for controlling all bodily functions, including movement, sensation, and emotion. It is also responsible for processing information from the senses and storing memories. The human nervous system is made up of two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS includes the brain and spinal cord, while the PNS consists of nerves that connect the CNS to the rest of the body. Human vision is a complex process that involves the eyes, optic nerve, and brain working together. The retina at the back of the eye converts light into electrical signals that are transmitted to the brain via the optic nerve. The human immune system is made up of various cells and organs that work together to defend against infections and diseases. White blood cells play a key role in this process by attacking and eliminating pathogens from the body.