Nasus externus

Nasus Externus is the Latin term for the external part of the nose. It is a prominent feature of the human face and plays a crucial role in respiration and the sense of smell.

Anatomy

The Nasus Externus is made up of bone, cartilage, and skin. The upper part of the nose, known as the nasal root, is formed by the nasal bone. The lower part, or the nasal tip, is made up of cartilage. The skin covering the nose varies in thickness, being thicker at the tip and thinner at the root.

Functions

The primary function of the Nasus Externus is to provide an airway for respiration. It also contains the olfactory mucosa responsible for the sense of smell. The design of the nose, with its hairs and mucus, helps filter out dust and other particles from the inhaled air, protecting the respiratory system.

Clinical Significance

Various conditions can affect the Nasus Externus, including nasal polyps, nasal fractures, and rhinoplasty, a surgical procedure to change the shape of the nose. It can also be affected by skin conditions such as rosacea and skin cancer.

See Also

• Nose
• Human nose
• Olfactory system
• Respiratory system