Trachea
General
Normal histology




Topic Completed: 1 October 2012

Revised: 5 April 2019

Copyright: 2002-2017, PathologyOutlines.com, Inc.

PubMed Search: Trachea histology [title]

Page views in 2018: 579
Page views in 2019 to date: 201
Cite this page: Handra-Luca A. Normal histology. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/tracheahistology.html. Accessed April 19th, 2019.
Definition / general
  • Composed of imperfect rings of hyaline cartilage, fibrous tissue, muscular fibers, mucous membranes and glands
Terminology
Cartilage:
  • 16 - 20 imperfect rings, with circular cartilaginous defect posterior and replaced by fibrous tissue and muscular fibers
  • Each cartilage is 4 mm in depth, 1 mm in thickness
  • Are elastic but may be calcified later in life

Fibrous tissue:
  • Thick layer covers outer surface of cartilaginous ring, thin layer covers inner surface
  • Both layers merge at upper and lower margins of cartilaginous rings

Muscular tissue:
  • Longitudinal and transverse layers of smooth muscle

Mucus membrane:
  • Continuous with laryngeal and bronchial membranes
  • Ciliated columnar epithelium overlying areolar and lymphoid tissue with elastic fibers, blood vessels, nerves, mucous glands
Diagrams / tables

Images hosted on other servers:

Transverse section

Microscopic (histologic) images

Images hosted on other servers:

Transverse section

Back to top