Interradicular septum

**Interradicular septum (septum internrdiculare)** is an anatomical structure that separates the paired roots of the lungs, that is, the entire pulmonary lobular tree of the right and left lungs. Normally, the interroot septa remain transparent. The interhilar septa divide the corresponding alveolar sacs into an isolated stroma and several pulmonary vascular structures called segmental (cavernous) branches of the pulmonary artery and vein, which are located outside the interhilar septum.

**The interradicular septum** is an anatomical formation that divides the pulmonary fields from the inside and lines the alveoli from the inside. This small septum is located between the two roots of the lung, which branch into the lungs and form the bronchial tree.

**Function:** * The interradicular septum plays an important role in conducting oxygen to the lungs, as it promotes its uniform distribution. * It also protects the lungs from damage and infectious diseases, as it acts as a barrier to microorganisms. **Signs of an interradicular septum:** - Round shape, size from 3 to 5 mm - Located between the interlobar septum and the hilar pleural junction - Consists of fibrous connective tissue reinforced by intravascular stroma and blood vessels. Inside there are many glands that produce mucus, which protects the septum from drying out and facilitates sound transmission.