1. The respiratory system
Sections of the larynx, trachea and
lung

2. Mediansaggital section of the larynx
1.
vestibule
1. epiglottic cartilage
6.
2. thyroid cartilage
ventricule
2. 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. Hyaline cartilage:
Thyroid cartilage
Cricoid cartilage
Arytenoid cartilage except the vocal process
Elastic cartilage:
Vocal process of arytenoid cartilage
Corniculate cartilage
Cuneiform cartilage
Epiglottic cartilage

4. Epiglottis
stratified squamous nonkeratinized epithelium
with high papillae on the pharyngeal surface
stratified nonkeratinized squamous epithelium
without papillae on the laryngeal surface
Larynx
ciliated pseudostratified columnar epithelium
Vocal fold
stratified squamous nonkeratinized epithelium

5. laryngeal surface
elastic cartilage
salivary
glands
pharyngeal surface
51. larynx-epiglottis (HE), 4X

6. Vestibular fold
Vocal fold
Ventricule
51. larynx (HE), 4X

7. Identification of the surfaces of epiglottis
Determination of vestibular and vocal folds
Recognition of covering epithelia

8. 1.Tunica mucosa:
a, epithelium mucosae: ciliated pseudostratified columnar
epithelium, goblet cells, endocrine cells
b, lamina propria: loose connective tissue,
lymphocytes, plasma cells
2. Tunica submucosa: loose connective tissue
tracheal glands sero-mucous glands
3. Tunica fibro-musculo-cartilaginea: hyaline cartilage rings
annular ligg.
paries membranaceus
(trachealis muscle,
connective tisue)
4. T. adventitia: connective fibers, blood vessels, nerves

9. hyaline
cartilage
ciliated pseudostratified
columnar epithelium
tracheal
glands
paries
membranaceus
52. trachea (HE), 4X

10. 52. trachea (HE), 40X
ciliated pseudostratified
columnar epithelium
basal lamina
capillary
lamina propria

11. Find the characteristic items of the
tracheal wall.

12. 1. T. mucosa: - ciliated pseudostratified columnar epithelium
- epithelium gradually decreases in its height,
lamina propria becomes thinner towards the
terminal bronchioli
2. T. muscularis: smooth muscle layer in the larger bronchi
is replaced by spirally arrenged smooth
muscle cells in the smaller bronchi
3. Cartilage plates: decrease gradually in number and size
4. Adventitia: collagen fibers.
In the wall of the bronchi small salivary glands can be found.

13. bronchial
lumen
hyaline
cartilage
smooth
muscle
alveolus
epithelium
53. lung- bronchus (HE), 10X

14. 53. lung- bronchiole
(HE), 10X
lumen of
bronchiole
alveoli
epithelium

15. 53. lung (HE), 40X
septum
pneumocyte I
pneumocyte II
alveolus

16. Differentiate between the walls of bronchi
and bronchioli.

17. The layers of the blood-air barrier
surfactant
fused basal lamina
type I cell
capillary endothel
capillary
lumen

18. 54. lung (orcein), 40X
elastic
fibers
pneumocyte I
pneumocyte II

19. Study the thin walls of alveoli.
Try to find pneumocyta II cells.