🧠STRUCTURE OF NEURONS 📌 Introduction Neurons are the structural and functional units of the nervous system. These specialized cells are responsible for receiving, processing, and transmitting electrical and chemical signals throughout the body. A typical human body contains over 86 billion neurons, working in networks to regulate every action—from reflexes to thoughts, movement, memory, and emotions. 🔬 I. Definition A neuron is an excitable cell designed to transmit information