Pharmacology

Nervous System It is the Central Processing Unit (CPU) of the human body. It controls all the activities of the body. It consists of two principal types of cells: neurons and neuroglia . Fig.1: Anatomy of a neuron Neuron: Also known as nerve cells These are Excitable cells Sensitive to various stimuli Convert stimuli into electrical signals ( Action Potentials ) or ( Nerve Impulse ) Action potentials can travel along the plasma membrane of a neuron due to the presence of specific voltage-gated ion channels Neuron conduct these Action potential to other neurons, to muscle tissue or to glands with the help of a chemical, called Neurotransmitter Classification of neurons Fig.2: Different types of neurons. A: Multipolar neuron; B: Bipolar neuron; C: Unipolar or pseudounipolar neuron Neuroglia or glia Initially, it was believed that these cells were the glue that held the nervous tissue together. Smaller than neurons, but 5-50 times more numerous Do not generate or propagate an action pot...

📜Classification of the Nervous System: Complete Guide for GPAT & University Exams (2026) 📚 Table of Contents Introduction to the Nervous System Structural Classification (Anatomical) Functional Classification (Physiological) Autonomic Nervous System in Detail Comparison Tables Pharmacy Perspective: Drugs Acting on the Nervous System GPAT & Exam Pearls Quick Revision Box Frequently Asked Exam Questions 📜 Introduction to the Nervous System The nervous system is the body's master control and communication system. It processes information from the environment and coordinates responses. For pharmacy students, understanding nervous system classification is crucial because most drugs act on specific parts of this system . The nervous system can be classified in two main ways : Structural (Anatomical) Classification – Based on location Functional (Physiological) Classification – Based on function Let's break down each classification step-by-step. ...