## **Core Concept**
The quadrilateral cartilage, also known as the septal cartilage, is a crucial component of the nasal septum. It provides structural support and helps maintain the shape of the nasal passages. Understanding its attachments is essential for knowledge of nasal anatomy and surgery.

## **Why the Correct Answer is Right**
The quadrilateral cartilage is attached to the following structures:
- The **perpendicular plate of the ethmoid bone** (superiorly)
- The **vomer bone** (inferiorly)
- The **two nasal bones** (anteriorly)

However, it does not directly attach to the **inferior nasal conchae**. The inferior nasal conchae are separate bones that project into the nasal cavity and are not directly connected to the quadrilateral cartilage.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is not provided, but if it mentioned a correct attachment, it would be accurate.
- **Option B:** This option is also not provided, but similarly, if it listed a correct attachment, it would be right.
- **Option C:** Without the specific text, we assume this could be a correct attachment.
- **Option D:** This is the correct answer because the quadrilateral cartilage is not attached to the **inferior nasal conchae**.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the nasal septum, primarily composed of the quadrilateral cartilage and the perpendicular plate of the ethmoid bone, is crucial for nasal support. Deviations or damage to this cartilage can lead to nasal obstruction and aesthetic issues, often requiring surgical intervention like septoplasty.

## **Correct Answer:** D. inferior nasal conchae.