How Do Toxic Substances Enter the Respiratory System?
Toxic substances can enter the respiratory system through various routes, primarily through inhalation. The respiratory tract is designed to filter and exchange gases, making it a prime entry point for airborne toxins. These substances can be in the form of gases, vapors, aerosols, or particulate matter. Once inhaled, they can deposit in different regions of the respiratory tract, leading to localized or systemic effects.
