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.
chronic bronchitis
emphysema
Carcinogens
People who quit smoking cannot reverse any of the damage that has been done to their lungs over an extended period of time.
The term “a smoker’s cough” refers to ________________ , which is caused by a long-term inflammation of the bronchi.
(1 point)
Responses
emphysema
emphysema
lung cancer
lung cancer
chronic bronchitis
chronic bronchitis
cilia degeneration
Janet smoked cigarettes since she was sixteen. Now at age 45, she suffers from shortness of breath, coughing, fatigue, sleep and heart problems, weight loss, and depression. Her condition is caused by a chronic lung condition that affects the alveoli. Janet suffers from:
(1 point)
Responses
emphysema
emphysema
lung cancer
lung cancer
chronic bronchitis
chronic bronchitis
cilia degeneration
cilia degeneration
Both marijuana and tobacco smoke contain__________________, which are substances that cause cancer.
(1 point)
Responses
Delta-9-tetrahydrocannabinol (THC)
Delta-9-tetrahydrocannabinol (THC)
Thiamine and dextrose
Thiamine and dextrose
Enzymes
Enzymes
Carcinogens
Carcinogens
Which of the following statements is not true?
(1 point)
Responses
Smoking at an early age increases the risk of lung cancer. For most smoking-related cancers, the risk rises as the individual continues to smoke.
Smoking at an early age increases the risk of lung cancer. For most smoking-related cancers, the risk rises as the individual continues to smoke.
Teenage smokers suffer from shortness of breath almost three times as often as teens who don't smoke and produce phlegm more than twice as often as teens who don't smoke.
Teenage smokers suffer from shortness of breath almost three times as often as teens who don't smoke and produce phlegm more than twice as often as teens who don't smoke.
Teenage smokers are more likely to have seen a doctor or other health professionals for an emotional or psychological complaint.
Teenage smokers are more likely to have seen a doctor or other health professionals for an emotional or psychological complaint.
People who quit smoking cannot reverse any of the damage that has been done to their lungs over an extended period of time.
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 eliminate options 1, 2, and 3 as they either incorrectly state that alveoli act as filters (they are actually responsible for gas exchange) or incorrectly describe the location of the cilia (they are found in the trachea, not the alveoli).
To verify the correct answer, we can use our knowledge of the respiratory system and the role of mucus and cilia. The bronchial tubes are responsible for conducting air to and from the lungs. Mucus, produced by goblet cells in the respiratory epithelium, helps trap dirt, dust, and germs present in the inhaled air. The cilia, which are tiny hair-like structures lining the trachea and bronchial tubes, then move in coordinated sweeping motions to move the mucus and trapped particles up and out of the airways, preventing them from entering the lungs.
Therefore, the correct answer is 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.