Histology Resp Lab Flashcards, Yosyraa

Conducting portion

Respiratory portion

Nasal Cavity

Pseudostratified columnar ciliated with goblet cells
(The epithelium lining of most of the conducting portion)

Pseudostratified columnar ciliated with goblet cells
(The epithelium lining of most of the conducting portion)

1- Ciliated Columnar cells
2- Mucous goblet cells

3- Brush cells (3%)
4- Basal cells (Stem cells)
5- Small granule cells (3%)

Olfactory epithelium

Modified pseudo-stratified columnar ciliated epithelium (NO GOBLET CELLS)
has 3 types of cells:
- Olfactory neurons
- Sustentacular cells (support)
- Basal cells (stem cells)

Trachea
(low power view)

Trachea
(low power view)

Blue- Hyaline cartilage
Green- epithelium
Yellow- Glands in submucosa

Trachea

Trachea
(medium power view)

Trachea
upper part: submucosa
lower part: cartilage

Trachea

Bronchial Tree

Bronchial Tree

Section in the lung showing intrapulmonary bronchus

Bronchus

Intra pulmonary bronchus

1- epithelium, 2- smooth muscle, 3- cartilage

Intra pulmonary bronchus

Intra pulmonary bronchus

Intra pulmonary bronchus

Bronchiole

Mucosa:
Epithelium: simple columnar to cuboidal partially ciliated with club cells
- Lamina propria: thin & contain elastic fibers.
Muscle layer: thin layer of circularly arranged smooth muscle.
- No goblet cells,
- No cartilage,
- No glands,
- No lymph follicles

Terminal Bronchiole and Clara Cells

Terminal Bronchiole and Clara Cells

Section showing bronchiole and alveoli
Red = alveoli

Section showing bronchiole and alveoli
Red = alveoli

Section showing bronchiole and alveoli (white spaces all around)
Red A = Artery

Bronchiole

Bronchus and Bronchiole

Respiratory portion consists of

1. Respiratory bronchiles
2. Alveolar ducts
3. Alveolar sacs
4. Alveoli

Lung

Alveolar epithelium

Alveoli

Arrow = Interalveolar septum

Arrow = Interalveolar septum

TEM photo of cells lining small bronchiole:

cubical ciliated cells and Clara cell

Type II pneumocyte

Type II pneumocyte

Type II pneumocyte

Identify labeled cell, sites and one specific feature?

Clara cell , mucosa of bronchiole, dome shaped apical surface and secretory granules

A -Identify the cell
B -Identify the labelled structure

A- pneumocyte type II
B- Lamellar bodies

Identify labeled structure

Intrapulmonary bronchus

1. Epithelium
2. Smooth muscles spirally arranged
3. Plates of hyaline cartilage in adventitia

Terminal bronchiole

Intra pulmonary bronchus

Trachea
1. Epithelium
2. Tracheal glands in submucosa
3. Elastic membrane
4. Perichondrium
5. Hyaline cartilage
6. Trachialis muscle
7. Adventitia

Lung alveoli and interalveolar septea