What is the “command centre” of most animals?

📌The nervous system (NS) is the “command centre” of an animal's body that coordinates its behavior and transmits signals between different body areas.

📌The function of the NS is to control movement of the organism and to affect the environment (e.g. through pheromones) by sending signals from one cell to others, or from one part of the body to others.

📌At the cellular level, the NS is defined by the presence of neurons, also known as "nerve cells".

📌Nervous systems are found in almost all multicellular animals, but vary greatly in complexity.

📌The NS derives its name from nerves, which are cylindrical bundles of fibers that emanate from the brain and central cord, and branch repeatedly to innervate every part of the body. Nerves are large enough to have been recognized by the ancient Egyptians, Greeks, and Romans, but their internal structure was not understood until it became possible to examine them using a microscope.

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