1. Introduction
  1.1 Background
  1.2 Research Objectives
2. Literature Review
  2.1 Overview of Air Pollution
  2.2 Sources of Air Pollution
  2.3 Types of Air Pollutants
  2.4 Health Effects of Air Pollution
3. Respiratory System and its Vulnerability to Air Pollution
  3.1 Anatomy and Function of the Respiratory System
  3.2 Mechanisms of Air Pollutant Entry into the Respiratory System
  3.3 Impact of Air Pollution on Lung Tissues and Cells
4. Specific Air Pollutants and their Effects on Respiratory Health
  4.1 Particulate Matter (PM)
  4.2 Ozone (O3)
  4.3 Nitrogen Dioxide (NO2)
  4.4 Sulfur Dioxide (SO2)
  4.5 Carbon Monoxide (CO)
  4.6 Volatile Organic Compounds (VOCs)
5. Health Effects of Air Pollution on the Respiratory System
  5.1 Acute Effects
  5.2 Chronic Effects
  5.3 Respiratory Diseases Associated with Air Pollution