- Tertiary bronchus
Name = PAGENAME
Latin = bronchi segmentales
Caption = 1. Trachea
3. Lobar bronchus
4. Segmental bronchus
DorlandsPre = b_23
DorlandsSuf = 12198382
The tertiary bronchi (also known as the segmental bronchi) arise from the secondary bronchi. The
respiratory epitheliumlining their lumen is surrounded by a layer of smooth muscle. This layer is composed of two ribbons of smooth muscle that spiral in opposite directions. The smooth muscle layer is surrounded by irregular plates of hyaline cartilagewhich help maintain the patency of the airway.
Each of the tertiary bronchi serves a specific
bronchopulmonary segment. There are 10 tertiary bronchi in the right lung, and eight in the left.
The tertiary bronchi get smaller and divide into
Gartner, Leslie P. and James L. Hiatt. Color Textbook of Histology, 2nd ed. (2001). ISBN 0-7216-8806-3
* - "Pleural Cavities and Lungs: The Bronchi and Their Divisions" (1/2)
* - "Pleural Cavities and Lungs: The Bronchi and Their Divisions" (2/2)
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