Use quantity of before singular or plural things you can measure. Use number of before plural things you can measure. There are subtle differences between amount of, quantity of and number of. The term amount of is used for things you cannot measure (See non-countable nouns).ESS AND FEWER. Amount of should be used with a singular word, and number of should be used with a plural word. Similarly, less should be used before a singular word, and fewer should be used with a plural word. See the lesson Less and fewer.
The nasal septum is the wall between the nostrils that separates the nasal passages. The septum is made of cartilage and thin bone. If the nasal septum is crooked, it is called a deviated nasal septum. A deviated septum may be caused by injury or surgery to the nose. A deviated nasal septum may not cause symptoms. When present, symptoms may include a crooked nose, trouble breathing through the nose (especially on one side), or a runny nose.
Diseases of the nasal cavity include viral, bacterial and fungal infections, nasal cavity tumors, both benign and much more often malignant, as well as inflammations of the nasal mucosa. Many problems can affect the nose, including: 1  Deviated septum-a shifting of the wall that divides the nasal cavity into halves.ilia and mucus along the inside wall of the nasal cavity traps and removes dust and pathogens from the air as it flows through the nasal cavity. The cilia move the mucus down the nasal cavity to the pharynx, where it can be swallowed.