Particles smaller than 5 microns can be inhaled deeply into the lungs. True or False?

Particles smaller than 5 microns can indeed be inhaled deeply into the lungs, which makes the statement true. The respiratory system is designed to filter out larger particles, but particles that are 2.5 microns or smaller can penetrate the pulmonary region, reaching the alveoli where gas exchange occurs. This is particularly concerning for health because these microscopic particles can carry pathogens, irritants, or toxic substances that pose significant risks to individuals’ respiratory health.

Understanding particle size is vital in microbial remediation and indoor air quality management, as it helps in assessing risks and implementing appropriate protective measures to safeguard individuals from airborne contaminants.