The nervous system is a complex network of nerves and cells that carry messages to and from the brain and spinal cord to various parts of the body. The proper functioning of these nerves ensures that ...

The visual system is the part of the central nervous system that is required for visual perception – receiving, processing and interpreting visual information to build a representation of the visual ...

Narrator: Serious scientists, like myself, believe our Solar System was formed by the collapse of a giant cloud of gas and rock and is held together by the gravitational pull of the Sun. Eight planets ...

The musculoskeletal system is an organ system comprising the bones, muscles and connective tissues (including cartilage, tendons and ligaments) that bind tissues and organs together. The main ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

The excretory system removes metabolic waste and maintains fluid, electrolyte, and acid–base balance essential for survival. The urinary (renal) system plays a central role through kidney filtration ...

What is the vascular system? The vascular system is made up of the vessels that carry blood and lymph fluid through the body. It's also called the circulatory system. The arteries and veins carry ...