Larynx, hypopharynx & trachea
General
Histology-trachea
Copyright: 2002-2019, PathologyOutlines.com, Inc.
PubMed Search: Trachea histology [title]
General
Histology-trachea
Author: Adriana Handra-Luca, M.D.
Topic Completed: 1 October 2012
Minor changes: 26 November 2019
Copyright: 2002-2019, PathologyOutlines.com, Inc.
PubMed Search: Trachea histology [title]
Table of Contents
Definition / general | Terminology | Diagrams / tables | Microscopic (histologic) imagesCite this page: Handra-Luca A. Histology-trachea. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/tracheahistology.html. Accessed June 1st, 2020.
Definition / general
- Composed of imperfect rings of hyaline cartilage, fibrous tissue, muscular fibers, mucous membranes and glands
Terminology
Cartilage:
Fibrous tissue:
Muscular tissue:
Mucus membrane:
- 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
