Little hairs called cilia.
Get on my level
most of the respiratory passage surface is lined with simple squamous epithrlium
cilia
Mucus entraps microorganisms entering the respiratory passages.
To clear out your respiratory passages
During an asthma attack, a person's respiratory passages become narrowed and inflamed
Little hairs called Cilia, which help filter dust from the air as it passes into the lungs.
If a smoker is trying to expel mucus in the respiratory passages, that is done by coughing. Smokers often cough.
Hyaline Cartilage
The respiratory system
Hyaline Cartilage
The lungs are the major organs of the respiratory system. The respiratory system consists of nose, nasal passages, nasopharynx, larynx, trachea and lungs.
The sounds made by air rushing through the large respiratory passages are referred to as bronchial sounds. They are best heard in the mid-back.
Dead space volume