5 min read
Updated on Aug 15, 2023
The human nose is a structure between the eyes. It is the entry point of the respiratory tract in the respiratory system, which stores the olfactory organ. The nose supplies the body with the air required for breathing. It is the organ that serves multi-purposes such as air filtration while breathing, cleans the debris from the inhaled air, and is the site of olfactory sensation. Let’s take a look at the nose anatomy and its functions.
The nose structure or nasal anatomy comprises both internal and external nose structures. Among the various parts of the nose, the cartilages and bones give it its shape. The external nose has three sections; such as frontal, basal and lateral. Further, two nasal bones in the frontal upper region form the bridge of the nose.
Here’s a look at the different parts one by one:
The first part of the nose anatomy is the bone, which is a tiny smooth skull bone that holds the nose bridge. This bone is a component of the face skeleton.
The mucous membrane releases sticky mucus to avoid the entrance of dust and unwanted particles. Mucus, along with cilia, work to trap unknown particles from entering through the nose while breathing. Moreover, the membrane warms the air we breathe in. The nose as well as throat and sinuses are all lined with the mucous membrane.
The hollow and empty space via which the air flows is the nasal cavity. It has two different parts called nasal passages. The air we breathe passes from the two passages.
The information from nose smell receptors is transferred to the brain by the nerve cells.
A nostril is one of the two openings in the external part of the nasal cavity.
This part comprises the cartilage wall and a thin bone that divides the two hollow compartments of the nose.
They are chambers filled with air and are hollow. They are located in the bone adjoining the nose. They help in sending mucus to the nasal cavity.
These are small structures within the nose which clean and warm the air that enters our lungs via the nose.
External nose anatomy is the part of the face with an opening to the nasal cavity. Its frame comprises bony structures as well as skeletons of cartilaginous.
Besides the critical function of breathing in oxygen and breathing out carbon dioxide, the nose also contributes to hearing and sense of taste. Here are some main functions of the nose:
Sinuses are air pockets linked to the passages of the nose. They are present inside the face and skull bones. They are connected by the nose passage via small tubes or channels called osteomeatal complexes.
Sinuses are of four types and are named after the bones in which they are located, such as;
Here are some nose conditions that people may suffer from:
This is the condition when the nasal septum is displaced to one side
This is the condition of inflammation of the nasal membrane, which causes issues like rhinorrhea, nasal itching, sneezing, and nasal congestion
This is the condition of abnormal growth of the bony structures inside the nose
It is the condition of common injury with the capacity to cause significant damage to the skin, cartilage or bone of the nose
It is the inflammation of the sinuses caused by an infection, and it can cause pain by blocking the sinuses
It is a rare kind of cancer that affects the area of the throat between the nose and pharynx
Other issues of the nose include nasal polyps, nasal valve collapse and nosebleeds, among others.
The nasal cavity anatomy filters and humidifies the air we breathe. Through the mucociliary clearance, it guards the respiratory tract. The nose is the source of pleasant aromas, and bad smells sensed through olfactory receptors. A healthy nose is necessary to avoid any clinically significant diseases that can occur if the nasal cavity’s functions are compromised.
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The nasal cavity warms and humidifies the inspired air. It removes the tiny airborne particles from reaching the lower airways while passing the air through the nasal cavity.
Nasal cavities are hollow spaces that help in passing the air in and out. The nostrils are the opening of the nose, which connects to the Nasal cavities. The foreign particles in the air are stopped from getting inside the nose by the nose hair, cilia and the mucous membrane inside the nasal cavities.
There are five layers in the nasal envelope: skin, fibro-muscular layer, superficial fatty layer, periosteum or perichondrium and deep fatty layer.
The nose tip is termed the apex.
The four structures associated with sinuses of the nose are - frontal, sphenoidal sinuses, maxillary and ethmoidal cells.
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