axial interstitium

axial interstitium

A network of connective tissue fibres in the lungs that begins in the hila and extends peripherally to the alveolar ducts, forming a robust sheath around the airways and the pulmonary arteries, connecting with the peripheral interstitium via the alveolar interstitium.
References in periodicals archive ?
Conceptually, the lung interstitium can be divided into 3 main parts: the axial interstitium (or peribronchovascular interstitium) which contains the bronchovascular bundles; the centrilobular interstitium, which contains the alveoli and capillaries for gas exchange; and the peripheral interstitium which contains the pulmonary venules, lymphatics and interlobular septae.