Q:

What is the function of the nose?

A:

The nose is an integral part of respiration and olfactory sensation. Both roles include varying components and techniques that work effectively and efficiently.

The nose is a cartilaginous organ on the face responsible for inhalation and exhalation of air and processing of scents and smells. Air is inhaled through the nose, and nose hairs catch the larger particles of dust and debris. Cilia and mucous in the nasal passages humidify, warm the air and catch any remaining foreign bodies before the inhaled air is passed down through the pharynx, larynx and trachea into the lungs.

Smells are processed simultaneously with respiration as the inhaled air passes over chemoreceptors, otherwise known as the olfactory epithelium. Soluble molecules are absorbed by the chemoreceptors, while proteins collect the non-soluble molecules and transport them to the chemoreceptors. All of this information is transported by axons in the olfactory nerve to the olfactory bulb. The olfactory bulb is responsible for conveying messages to the brain to organize and understand the scents inhaled.

Once all of this has occurred, the lungs exhale the left over air out through the nose to complete the cycle. In this manner, the nose is responsible for both inhalation and exhalation.


Is this answer helpful?

Similar Questions

  • Q:

    What is the function of the nasopharynx?

    A:

    The nasopharynx, the upper area of the throat behind the nose, is the space above the soft part of the roof of the mouth that allows the passage of air from the nose to the throat, according to Healthline. The nasopharynx also provides drainage for lymphatic fluids.

    Full Answer >
    Filed Under:
  • Q:

    What is the function of mucus?

    A:

    WebMD explains that the primary purpose of mucus is to coat the passageways of the nose, throat, sinuses, lungs and gastrointestinal tract and keep them from becoming dry. If these passages dried out, their surfaces could crack, potentially providing pathogens with an entryway into the body. Additionally, the mucus lining these structures traps and contains dirt and other foreign particles so that they do not reach the lungs.

    Full Answer >
    Filed Under:
  • Q:

    What is the function of the nasal cavity?

    A:

    The sinus, or nasal cavity, serves to lighten the skull, to produce mucus, to warm and moisturize air breathed in through the nose and to serve as a chamber in which speech resonates. The sinus cavity is made up of four pairs of sinuses.

    Full Answer >
    Filed Under:
  • Q:

    What is a nasal passage?

    A:

    The nasal passage is a channel wherein air flows through the nose. Respiratory mucous membranes with many hair-like cells line the walls of this passage.

    Full Answer >
    Filed Under:

Explore