Q: Which human body system is a complex network of nervous tissue that carries electrical messages throughout the body?


Read this paragraph and choose the correct option from the provided answers:

The nervous system is a complex network of nervous tissue that carries electrical messages throughout the body. Its functions include controlling muscles, maintaining balance, sensing internal and external environments, controlling body systems to maintain homeostasis, preparing the body for emergencies, and allowing higher mental functions such as thinking.

 Choices:

- the localized system

- the lymph system

- the bacterial system

- the nervous system


A:
the nervous system