Nasal cavity

The nasal cavity (cavum nasi) is one of the most important structures of the human body. It is located at the top of the face and performs many functions. The nasal cavity is the initial part of the respiratory system through which air is inhaled. It is also involved in the sense of smell, mucus production and protection against infections.

The nasal cavity consists of several parts. At the front is the nostril, which has two nostrils, each of which opens into the nasal canal. The nasal canal continues into the nasal cavity, which is the main part of the nasal cavity. The nasal cavity has several openings, including the nasal opening, which connects the nasal cavity to the pharynx.

The nasal cavity performs several important functions. It is involved in breathing, ensuring fresh air enters the lungs. The mucus secreted in the nasal cavity protects the body from infections and bacteria that can enter through the respiratory tract. In addition, the nasal cavity plays an important role in the sense of smell. Here are the receptors that allow us to smell.

However, the nasal cavity can also be susceptible to disease. For example, sinusitis is an inflammation of the sinuses that can lead to pain and difficulty breathing. Other nasal diseases include rhinitis, polyps and cancer.

Overall, the nasal cavity is an important part of the human body and plays a key role in our lives. Her health must be maintained and protected to avoid possible problems and complications.

Nasal cavity: anatomy and functions

The nasal cavity, also known as cavum nasi, pna, bna or jna, is an important part of the human respiratory system. Located at the top of the face, the nasal cavity has a number of anatomical and functional roles that play an important role in our ability to breathe and smell.

Anatomically, the nasal cavity consists of two main parts: external and internal. The outer part of the nasal cavity includes the nostrils and the nasal septum, which divides the nasal cavity into two halves. The interior of the nasal cavity includes the mucous membrane, which lines the walls of the nasal cavity, as well as the turbinates, which are folded structures within the cavity.

One of the main functions of the nasal cavity is to filter inhaled air. The mucous membrane of the nasal cavity contains many hair cells and glands that help trap dust, dirt and other particles present in the air before they reach the lower parts of the respiratory system. This helps protect the lungs from potentially harmful substances and infections.

The nasal cavity also plays an important role in the perception of smell. The turbinates contain receptor cells that are able to detect various odors and transmit information about this to the brain. Thanks to this function, we can enjoy the aromas of food, flowers and other objects around us.

In addition, the nasal cavity also performs the function of humidifying and warming the inhaled air. When we inhale air through the nose, the mucous membrane secretes a small amount of moisture to prevent the air from becoming too dry, which can irritate the airways. In addition, the vessels in the mucous membrane dilate and contract to regulate the temperature of the inhaled air, ensuring that it is in an optimal state before reaching the lungs.

Finally, the nasal cavity plays a role in the formation of speech sounds. When pronouncing sounds, air passes through the nasal cavity, and its shape and size affect the sound color and resonance. For example, when pronouncing the sound "n", air passes through the nasal cavity, creating a sound effect.

Overall, the nasal cavity performs several important functions that affect our breathing, sense of smell, comfort and ability to speak. Understanding the anatomy and function of the nasal cavity can help us better understand how our respiratory system works and how we interact with our environment. The nasal cavity is an amazing and complex organ that plays an important role in our lives.