Hydrogen is pronounced as HI-dreh-jen. History and Uses: Scientists had been producing hydrogen for years before it was recognized as an element. Written records indicate that Robert Boyle produced hydrogen gas as early as 1671 while experimenting with iron and acids.
By Dr Ananya Mandal, MD. 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 nervous system includes both the Central nervous system and Peripheral nervous system. The Central nervous system is made up of the brain and spinal cord and The Peripheral nervous system is made up of the Somatic and the Autonomic nervous systems.
The nervous system is responsible for transmitting and receiving electrical and chemical signals (messages) within the body. Each division of the nervous system plays a vital part in the functioning of the human body. The nervous system can also be considered the human bodyâs communication network. The nervous system sends messages through afferent neurons, efferent neurons and interneurons.