What is the correct sequence of path (from initial to final) of particulate matter exposure to humans?
A. Lungs
B. Soft tissues of organs
C. Blood
D. Inhalation

Choose the correct answer from the options given below:

Correct option is B

The correct sequence of particulate matter exposure in humans begins with inhalation (D), where particulate matter enters the respiratory system. Next, it reaches the lungs (A) where gas exchange occurs. From the lungs, particulate matter or its components can enter the bloodstream (C) through the alveolar-capillary barrier. Finally, the particles can travel via blood to reach soft tissues of organs (B), potentially causing systemic effects.

Hence, Option B is the correct answer .

This sequence represents the typical pathway:
Inhalation → Lung deposition → Blood translocation → Organ accumulation

Information Booster:

1. Inhalation is the primary route of exposure to airborne particulate matter.

2. The lungs act as the initial filter and site of deposition for inhaled particles.

3. Ultrafine particles can cross alveolar membranes and enter the bloodstream.

4. Once in the blood, particles or their soluble components can be transported systemically.

5. Soft tissues of organs can be affected, leading to inflammation and toxicity.

6. Exposure to particulate matter is linked to respiratory, cardiovascular, and systemic diseases.

7. Understanding this path is essential for assessing health risks from air pollution.

Additional Information:

• Inhalation (D): The entry point for airborne pollutants into the human body.

• Lungs (A): Primary organ of deposition and potential damage from particulate matter.

• Blood (C): Medium for transport of particles beyond the lungs to other organs.

• Soft tissues of organs (B): Final site where particulate matter can cause systemic effects.