Comprised of bone and cartilage, the nose separates into two hollow nostrils. The nostrils open up to the hollow sinus spaces in the head. Some conditions, such as nasal polyps or seasonal allergies, may hinder the functions of the nose. As part of the respiratory system, the nose serves several functions.
Breathing
The nasal passages allow air to flow in and out during normal breathing. As a person inhales, the nose warms and humidifies the air before it gets to the lungs. The lining in the nose has many blood vessels at the surface. The warm blood flowing through the nose helps warm the air.
Cleansing
The nose has many small hairs inside the nostrils. These hairs serve to filter the air and remove dirt and particles before they enter the lungs. Sneezing and nose blowing help remove the particles out of the body.
Smell
Smell is one of the most important functions of the nose. The sense of smell is not completely understood. The importance of smell is known and is a key component for memories, physical attraction and emotional connections, according to the "Ear, Nose and Throat" magazine. The olfactory nerves are pairs of cranial nerves that connect the nose to the brain and assist in perceives and interpreting smells. Conditions, such as a cold, will decrease the sense of smell. Some people suffer from a condition called anosmia, which is the inability to smell.
Taste
Although taste is a completely separate sense than smell, the nose plays a role in the way the tongue perceives taste. Individuals with a congested nose report a decreased sense of taste. The aroma of the food plays a role in the taste, according to the University of California San Diego Medical Center.
Voice
The air resonating in nose assists in giving the voice its particular sound. This is why individuals suffering with a stuffed nose sound differently than normal. The shape of the septum also plays a role in the sound of the voice. Surgery on the nose may also alter the sound of a person's voice.
