Histology of respiratory system larynx trache and lung


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Histology of respiratory system larynx trache and lung

  1. 1. The respiratory systemSections of the larynx, trachea and lung
  2. 2. Mediansaggital section of the larynx 1. vestibule 1. epiglottic cartilage 6. 2. thyroid cartilage ventricule2. 3. arch of cricoid cartilage 7. subepiglottic 5. 4. cartilages of trachea cavity 5. lamina of cricoid cartilage 6. vestibular fold 3. 7. vocal fold 4. 4.
  3. 3. Hyaline cartilage: Thyroid cartilage Cricoid cartilage Arytenoid cartilage except the vocal processElastic cartilage: Vocal process of arytenoid cartilage Corniculate cartilage Cuneiform cartilage Epiglottic cartilage
  4. 4. Epiglottis stratified squamous nonkeratinized epithelium with high papillae on the pharyngeal surface stratified nonkeratinized squamous epithelium without papillae on the laryngeal surfaceLarynx ciliated pseudostratified columnar epitheliumVocal fold stratified squamous nonkeratinized epithelium
  5. 5. laryngeal surface elastic cartilage salivary glands pharyngeal surface51. larynx-epiglottis (HE), 4X
  6. 6. Vestibular fold Vocal fold Ventricule51. larynx (HE), 4X
  7. 7. Identification of the surfaces of epiglottisDetermination of vestibular and vocal foldsRecognition of covering epithelia
  8. 8. 1.Tunica mucosa: a, epithelium mucosae: ciliated pseudostratified columnar epithelium, goblet cells, endocrine cells b, lamina propria: loose connective tissue, lymphocytes, plasma cells2. Tunica submucosa: loose connective tissue tracheal glands sero-mucous glands3. Tunica fibro-musculo-cartilaginea: hyaline cartilage rings annular ligg. paries membranaceus (trachealis muscle, connective tisue)4. T. adventitia: connective fibers, blood vessels, nerves
  9. 9. hyaline cartilageciliated pseudostratifiedcolumnar epithelium tracheal glands paries membranaceus52. trachea (HE), 4X
  10. 10. 52. trachea (HE), 40X ciliated pseudostratified columnar epithelium basal lamina capillary lamina propria
  11. 11. Find the characteristic items of the tracheal wall.
  12. 12. 1. T. mucosa: - ciliated pseudostratified columnar epithelium - epithelium gradually decreases in its height, lamina propria becomes thinner towards the terminal bronchioli2. T. muscularis: smooth muscle layer in the larger bronchi is replaced by spirally arrenged smooth muscle cells in the smaller bronchi3. Cartilage plates: decrease gradually in number and size4. Adventitia: collagen fibers.In the wall of the bronchi small salivary glands can be found.
  13. 13. bronchial lumenhyalinecartilage smooth muscle alveolus epithelium53. lung- bronchus (HE), 10X
  14. 14. 53. lung- bronchiole (HE), 10Xlumen ofbronchiole alveoli epithelium
  15. 15. 53. lung (HE), 40X septum pneumocyte Ipneumocyte II alveolus
  16. 16. Differentiate between the walls of bronchi and bronchioli.
  17. 17. The layers of the blood-air barrier surfactantfused basal lamina type I cell capillary endothel capillary lumen
  18. 18. 54. lung (orcein), 40X elastic fibers pneumocyte I pneumocyte II
  19. 19. Study the thin walls of alveoli.Try to find pneumocyta II cells.