Respiratory System - Histology

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Introduction

This page contains information and images associated with respiratory system histology.

This can be initially divided into the 2 regions of the upper and lower respiratory tract.

  • For the upper respiratory tract observe the epithelial specialisations, sensory regions and associated cartilages.
  • For the lower respiratory tract observe the basic structure of the lung, alveoli and ducts, and associated cardiovascular elements.
Respiratory Links: respiratory | Science Lecture | Lecture Movie | Med Lecture | Stage 13 | Stage 22 | upper respiratory tract | diaphragm | Histology | Postnatal | respiratory abnormalities | Respiratory Quiz | Respiratory terms | Category:Respiratory
Historic Embryology - Respiratory 
1902 The Nasal Cavities and Olfactory Structures | 1906 Lung | 1912 Upper Respiratory Tract | 1912 Respiratory | 1913 Prenatal and Neonatal Lung | 1914 Phrenic Nerve | 1918 Respiratory images | 1921 Respiratory | 1922 Chick Pulmonary Vessels | 1934 Right Fetal Lung | 1936 Early Human Lung | 1937 Terminal Air Passages | 1938 Human Histology

Fetal Histology

Fetal lung histology.jpgFetal lung histology 01.jpg

Fetal Respiratory: late canalicular | unlabeled late canalicular | Hyaline cartilage | Respiratory Histology

Upper Respiratory Tract - Nasal Cavity

Respiratory

Respiratory histology 12.jpg Respiratory histology 11.jpg
Nasal respiratory epithelium (inferior concha) Nasal respiratory epithelium (detail)

Olfactory

Nasal cavity olfactory epithelium cells

  1. Olfactory cells
  2. Sustentacular cells - located mainly in the superficial cell layer of the epithelium (difficult to distinguish from olfactory cells).
  3. Basal cells - identified by their location.
Epithelium
  • Cilia are not visible
  • goblet cells are absent from the olfactory epithelium.
Lamina Propria
  • olfactory axon bundles (lightly stained, rounded areas) connected to olfactory cells.
  • Bowman's glands - (small mucous glands, olfactory glands) function to moisturise the epithelium.


Respiratory histology 13.jpg Respiratory histology 14.jpg
Nasal cavity olfactory Nasal cavity olfactory (detail)

Trachea

Hyaline cartilage 03.jpg Hyaline cartilage 04.jpg


Respiratory histology 05.jpg Respiratory histology 06.jpg


Bronchiole

Respiratory histology 01.jpg Respiratory histology 09.jpg

Lung

Respiratory histology 08.jpg Respiratory histology 07.jpg

Respiratory histology 02.jpg Respiratory histology 03.jpg Respiratory histology 04.jpg Respiratory histology 10.jpg
Alveolar Duct Alveoli Alveoli Elastin Lung Reticular Fibres

Gallery


Respiratory Histology: Bronchiole | Alveolar Duct | Alveoli | EM Alveoli septum | Alveoli Elastin | Trachea 1 | Trachea 2 | labeled lung | unlabeled lung | Respiratory Bronchiole | Lung Reticular Fibres | Nasal Inferior Concha | Nasal Respiratory Epithelium | Olfactory Region overview | Olfactory Region Epithelium | Histology Stains


Glossary Links

Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Term Link

Cite this page: Hill, M.A. (2024, March 29) Embryology Respiratory System - Histology. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Respiratory_System_-_Histology

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G