How the septum is made?

The nasal septum is a complex structure formed by various anatomical components that divide the nasal cavity into two separate compartments. Its development involves intricate embryological processes and the participation of several tissues. Here's a general overview of how the nasal septum is formed:

1. Early Embryonic Development:

During the early stages of embryonic development, the nasal septum begins as a thickening of ectoderm and mesoderm tissue in the midline of the face. This thickened area is known as the nasal placode.

2. Formation of Nasal Processes:

As the embryo continues to develop, the nasal placode gives rise to paired nasal processes: the medial nasal processes and the lateral nasal processes.

3. Merging of Nasal Processes:

The medial nasal processes grow towards each other and eventually fuse in the midline. This fusion creates the primary nasal septum, which separates the developing nasal cavities.

4. Formation of the Vomer:

A bone called the vomer develops within the nasal septum. The vomer grows downwards from the sphenoid bone and contributes to the posterior part of the nasal septum.

5. Contribution from Cartilage:

The nasal septum also includes cartilage components. The septal cartilage is a crucial component located in the anterior portion of the nasal septum. It provides structural support and flexibility.

6. Completion of the Septum:

As the fetus develops, the nasal septum continues to grow and mature. The different components, including bone and cartilage, gradually fuse together to form a complete and functional nasal septum.

It's important to note that the formation of the nasal septum can be influenced by genetic factors, environmental factors, and even injuries or trauma during development. Variations in the shape and structure of the nasal septum can occur, leading to conditions such as a deviated septum or other septal abnormalities.