Many particles, such as dust, are inhaled when people breathe. Which part of the respiratory system filters out the majority of these particles?
A. nose
B. alveoli
C. trachea
D. diaphragm
I'm not sure which one it is.
Nose would be the correct answer.
All the others, as you'll see by Googling, are just other components that do not filter air. It is also somewhat obvious since the nose (other than the mouth) is the only input area of air, so it must be the answer.
As air goes through the nostrils, the nose-hairs filter it so it doesn't cause any problems inside the lungs.
Use duckduckgo.com to look up each term. I can tell you right now, it's not diaphragm!
To determine which part of the respiratory system filters out the majority of inhaled particles, let's consider each option:
A. Nose: The nose plays an important role in filtering the air we breathe. As air enters the nasal cavity, tiny hairs called cilia and mucus lining the nasal passages act as a physical barrier, trapping larger particles like dust before they reach the lungs. However, the nose alone does not filter out the majority of inhaled particles.
B. Alveoli: The alveoli are small air sacs found at the end of bronchioles in the lungs. Their main function is to exchange oxygen and carbon dioxide with the bloodstream. While alveoli are not specifically designed for filtering particles, they can sometimes capture smaller particles due to their fine mesh-like structure. However, the alveoli do not filter out the majority of inhaled particles.
C. Trachea: The trachea, commonly known as the windpipe, is a tube that connects the larynx to the bronchi. It helps in the transmission of air to and from the lungs. Similar to the alveoli, the trachea does not have specialized mechanisms for particle filtration.
D. Diaphragm: The diaphragm is a dome-shaped muscle located at the base of the ribcage that aids in the breathing process. It contracts and flattens during inhalation, expanding the chest cavity and allowing air to enter the lungs. The diaphragm's primary function is not particle filtration.
Based on the options provided, the correct answer is A. Nose. Though not the sole organ responsible for filtering out particles, the nose does play a significant role in capturing larger particles before they can reach the lungs.