A little girl was playing in the snow one day and found that she was wiping her nose quite often. The "runny nose" that she was
experiencing due to the cold temperatures resulted from:_______. a. the slowed activity of nasal cilia.
b. an insufficient production of mucus.
c. an inadequate supply of blood to the nasal epithelium.
d. a build up of tears in the nasal septum.
Answer is A, the slowed activity of the nasal cilia.
Explanation:
The nasal cilia are hair-like structure or projection. which are found in the mucus membrane. The germ , dust or particles that could cause irritation to the lung, are captured by the mucus. This mucus are moved away from the lung by the nasal cilia, either through the nose or swallow.
They can also be found at the air passage , moving mucus out of the lung.
In the case of the little girl, the girl experienced a running nose due to the slow activity of the nasal cilia, this is because of the col temperature.
Inside the nose contains special lining of mucosa that produces mucus. The mucosa lining also includes cilia, or tiny hair-like structures. As air passes through the nose, the nasal cilia are always in motion to trap harmful particles in the form of mucus. They are trapped in the nose as mucus.
In cold temperatures, the pace of the nasal cilia is slowed down. As the cell trapped mucus increases, the mucus stays in the nose and then drips or dribbles out of the nose causing running nose.
