Septal nasal cartilage

Septal nasal cartilage

The septal nasal cartilage, also known as the quadrangular cartilage, is a vital structure within the human nose. It forms the anterior part of the nasal septum, which divides the nasal cavity into two nostrils. This cartilage is essential for maintaining the shape and function of the nose, contributing to both respiration and olfaction.

Anatomy

The septal nasal cartilage is a flat, quadrilateral plate that extends from the nasal bones and the frontal process of the maxilla to the vomer and the perpendicular plate of the ethmoid bone. It is bordered by the lateral nasal cartilages and the greater alar cartilages.

Function

The primary function of the septal nasal cartilage is to support the structure of the nose and maintain an open airway for breathing. It also plays a role in the aesthetic appearance of the nose, influencing its shape and symmetry.

Clinical Significance

Damage or deviation of the septal nasal cartilage can lead to a condition known as a deviated septum, which can cause nasal obstruction, difficulty breathing, and snoring. Surgical procedures such as septoplasty are often performed to correct these issues.

Development

The septal nasal cartilage develops from the mesenchyme during embryonic growth. It undergoes ossification in certain areas as the individual ages, but remains largely cartilaginous throughout life.

Related Structures

• Nasal septum
• Lateral nasal cartilage
• Greater alar cartilage
• Vomer
• Ethmoid bone

See Also

• Nasal cavity
• Nasal bone
• Septoplasty
• Deviated septum