What is the neural system of all animals composed of?

Coordination refers to the process by which two or more organs interact and complement each other's functions in order to maintain homeostasis. The neural system of all animals is composed of highly specialized cells called neurons, which can detect, receive, and transmit different kinds of stimuli. The neural organization is very simple in lower invertebrates such as Hydra, and is composed of a network of neurons.

The neural system is better organized in insects, where a brain is present along with a number of ganglia and neural tissues, making it moderately developed.The somatic neural system relays impulses from the CNS to skeletal muscles. The autonomic neural system transmits impulses from the CNS to the involuntary organs and smooth muscles of the body.