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Trachea (cross section)

   

Overview

Clinical anatomy

General thorax anatomy

Clinical

Bilateral pneumothorax
Bronchial stenosis
Left tension pneumothorax

Workbook tasks

Slide 73: Trachea

H/E

This specimen is a section through the trachea.

Identify:

Macroscopic

  • The ring shaped trachea.

  • The horseshoe shaped hyaline cartilage.

Microscopic

  • Lumen

  • Epithelium

  • Lamina propria

  • Submucosa

  • Cartilage

  • Muscle

  • Adventitia.

  • The four types of cells that are found in this epithelium.

  • Lacunae

  • Chondrocytes

  • Matrix

  • Perichondrium

 

Draw and annotate:

A line drawing of the trachea showing the layers it is comprised of.

A few epithelial cells in which all four types of cells are present. Clearly indicate each of the four cell types.

A portion of the cartilage and perichondrium in fine detail.

 

Reflection:
  1. How does each one of the four cell types appear in this epithelium?
  2. Why is this epithelium described as pseudostratified?
  3. What are the functions of each of the four cell types?
  4. What is characteristic of the shape, size and arrangement of the lacunae?
  5. What is the appearance of chondrocytes?
  6. What is the appearance of the matrix?
  7. What type of growth is found in hyaline cartilage?
  8. What type of epithelium, comprising how many different cell types, line the trachea?
  9. What are the two prominent structures of the lamina propria?
  10. What prominent structures are found in the submucosa?
  11. Which cartilage is found here?
  12. Where and what type of muscle is found here?
 

Slides

Microscope

Cross section through the trachea
Cross section through the trachea
Section through the wall of the trachea
Section through the wall of the trachea
Section through the wall of the trachea
Section through the wall of the trachea
Section through the wall of the trachea
Section through the wall of the trachea
Section through the wall of the trachea

Pseudostratified ciliated columnar epithelium

Hyaline cartilage


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© februarie - julie 2008 marius loots