The nose is one of the essential sense organs of the body and is required for smelling and breathing. It is the only visible part of your respiratory system and consists of mucus and cilia (hair-like structures) that filter out foreign particles from entering your body or lungs.
When we breathe, the air enters our nostrils, travels through our throat, and finally enters the lungs. The nasal passage has many tiny nerve endings in the linings that pick up scents and carry the information about these scents to the brain.
Read this post to know more about the nose, parts of the nose, their functions, and some fun facts about the nose for kids.
Diagram Of The Nose For Kids
Parts Of The Nose
The nose acts as the main gateway of the respiratory system. Your nose helps you smell things and also plays a significant role in helping you taste things.
Before we learn some amazing facts about the nose, let us first know about the main parts of the nose.
The nose has two holes called nostrils, which are separated from each other by the septum.
The two nostrils are separated by a wall of flexible cartilage called the septum. The septum is not as hard as the bones but is much firmer than muscle and skin. It extends from the nostril openings to the nasopharynx.
The nasopharynx is located at the base of your skull and above the roof of your mouth. It connects the nose to the back of the mouth and allows you to breathe through your nose.
In the middle of the face and behind the nose is an air-filled space called the nasal cavity. The nasal cavity is separated from the mouth by the palate. This cavity connects directly with the back of the throat.
When you inhale from the nostrils, the air enters the nasal passage and into the nasal cavity. From the nasal cavity, the air enters the back of the throat, then into the trachea (windpipe), and finally into the lungs.
The nasal cavity is lined with a mucous membrane, a thin, moist layer of tissue that warms and moistens the air before it enters the lungs. This membrane also helps produce mucus, which helps trap dust particles, germs, etc.
The mucous membrane is lined with tiny, microscopic hair-like projections known as cilia. These are found at the back of the nose and also as a lining in the air passages. They keep moving back and forth to keep the mucus and debris out of the back of the nose and lungs.
The olfactory epithelium is present on the roof of the nasal cavity. It consists of many different odor receptors. For a specific smell, a particular receptor is stimulated. The brain then interprets the receptor signal to identify the scent.
21 Fascinating Facts About The Nose For Kids
- Your nose can detect more than one trillion smells.
- An average person takes between 17,280 and 23,040 breaths a day.
- A study conducted at the University of Iowa suggests that male noses are 10% larger than female noses.
- Your noses are not as big as they appear on selfies. Selfies increase the nasal size by 30% in males and 29% in females.
- In 2004, Richard Axel and Linda B. Buck won the Nobel Prize in Physiology or Medicine for their research on olfactory receptors.
- The human nose consists of approximately 50 million olfactory receptor cells.
- The nose and sinuses together produce around a liter of mucus every day.
- The mucus keeps the lining of your nose moist and warms the air you breathe.
- Mucus contains chemicals that keep you healthy.
- When the air passes through the nasal cavity, it is warmed or cooled to match the body temperature.
- The total loss of smell is termed anosmia, also called smell blindness, while the partial loss of smell is called hyposmia.
- A heightened or strong sense of smell is known as hyperosmia.
- Surgery of the nose done to change its appearance or improve breathing is known as rhinoplasty.
- Smells trigger memories. Your sense of smell is directly connected to your brain area where memories and emotions are formed.
- A single sneeze produces about 40,000 droplets and travels up to 100 miles per hour.
- You don’t sneeze in your sleep because the nerves triggering sneezes are also sleeping along with you.
- There are around 14 basic nose shapes.
- The human nose cannot smell natural gas. Thus, gas companies add a harmless gas called mercaptan to it for your nose to detect it.
- Your nose shapes the sound of your voice.
- You should never tilt your head back when your nose bleeds. Instead, you should sit or stand straight with your head leaned slightly forward.
- The Maori people in New Zealand press their noses against each other as a greeting.
Now that you know the importance of your nose, give it all the care it needs. Although it looks very small, it is one of the vital parts of the body. Without your nose, you would not be able to smell the fresh flowers in the garden and the sweet cookies your grandma bakes.