Select the answer below that best describes how the lungs are kept free of germs and dirt from the air.
(1 point)
Responses
The alveoli act as filters for the lungs collecting particles of dirt and germs to be exhaled when the diaphragm relaxes.
The alveoli act as filters for the lungs collecting particles of dirt and germs to be exhaled when the diaphragm relaxes.
Tiny hairs known as cilia clean the trachea of dirt and germs before it can enter the lungs.
Tiny hairs known as cilia clean the trachea of dirt and germs before it can enter the lungs.
Hairs known as cilia, found inside the alveoli, collect the dirt and germs to be expelled from the lungs.
Hairs known as cilia, found inside the alveoli, collect the dirt and germs to be expelled from the lungs.
Mucus found in the bronchial tubes collects dirt and germs that gets into your lungs. Tiny hairs called cilia work to sweep out the debris collected to keep your lungs clean.
Mucus found in the bronchial tubes collects dirt and germs that gets into your lungs. Tiny hairs called cilia work to sweep out the debris collected to keep your lungs clean.
Mucus found in the bronchial tubes collects dirt and germs that gets into your lungs. Tiny hairs called cilia work to sweep out the debris collected to keep your lungs clean.
The correct answer is: Mucus found in the bronchial tubes collects dirt and germs that gets into your lungs. Tiny hairs called cilia work to sweep out the debris collected to keep your lungs clean.
The correct answer is:
Mucus found in the bronchial tubes collects dirt and germs that get into your lungs. Tiny hairs called cilia work to sweep out the debris collected to keep your lungs clean.
To arrive at this answer, we can analyze each option and determine which one accurately describes how the lungs are kept free of germs and dirt from the air.
Option 1: The alveoli act as filters for the lungs collecting particles of dirt and germs to be exhaled when the diaphragm relaxes.
The alveoli are small air sacs in the lungs responsible for gas exchange, not for filtering dirt and germs. Therefore, this option is not correct.
Option 2: Tiny hairs known as cilia clean the trachea of dirt and germs before it can enter the lungs.
Cilia are indeed tiny hairs that line the respiratory tract, including the trachea. Their main function is to sweep away dirt and germs before they reach the lungs. This option accurately describes how the lungs are kept free of germs and dirt, so it is a potential correct answer.
Option 3: Hairs known as cilia, found inside the alveoli, collect dirt and germs to be expelled from the lungs.
Cilia are not found inside the alveoli but rather along the respiratory tract. This option is incorrect.
Option 4: Mucus found in the bronchial tubes collects dirt and germs that get into your lungs. Tiny hairs called cilia work to sweep out the debris collected to keep your lungs clean.
This option accurately describes how mucus and cilia work together to keep the lungs clean. The mucus in the bronchial tubes traps dirt and germs, while the cilia move in coordinated waves to sweep out this trapped debris. Therefore, this option is the correct answer.