🧠 Overview of the Nervous System The nervous system is a highly complex and vital system responsible for controlling and coordinating all body activities. It allows the body to respond to internal and external stimuli and maintain homeostasis. 🔰 Definition The nervous system is a specialized network of cells that transmits signals between different parts of the body to regulate bodily functions, sensation, movement, and cognition. 🧩 Major Functions 🏗️