Respiratory System Histology Laboratory Orientation

Respiratory System HistologyLaboratory Orientation

#40; Trachea

Respiratory epithelium

Basement membrane

Elastic fibers

#126 Trachea Esophagus

esophagus

trachea

Trachealis muscle

#127 Trachealis Muscle (smooth)

Terminal bronchiole

Respiratory bronchiole

Bronchiole

Bronchi

Alveolar sacs and ducts

#130-1 Lung

2?

1?Bronchus

Pulmonary artery

#130-1 Lung

Pulmonary artery

Close to bronchial trees relatively thin wall (media) elastic laminae relatively wide lumen

#130-1 Lung

Bronchial cartilage

4? 3?

Bronchial vein

Bronchial artery

Only in the wall of large bronchi. Ordinary arteries with relatively thick media.

Bronchial Arteries

Left bronchial arteries

Right bronchial artery

#130-1 Lung

Ciliated and non-ciliated (Clara) cells No goblet cells Prominent sm. M.

Ciliated cells

non-ciliated cells

Smooth muscle

Bronchiole

#132-2 (Terminal) Bronchiole & Pulmonary artery

Bronchiole

P. A.

Smooth Muscle

#132 Lung

6?

5?

7?

Terminal bronchiole

Respiratory bronchiole

P.A.

Low cells alveolar pocketingKnobs of sm. muscle (arrows)

#129 Lung

8?Alveolar duct

9? alveoli

Alveolar sac

#130-1

Lung

Type I Pneumocyte

Type II Pneumocyte (surfactant)

Macrophage

10?

11?

12?

#130-1 Lung

Pulmonary vein

Away from bronchial trees thin wall

13?

#130-2 Lung Pulmonary vein

Intrapulmonary circulation

Pulmonary artery Pulmonary vein

Pulmonary vein

#129 Lung

?

?

?

Slide 68

bronchiole lumen

Slide 59

Slide 60

Slide 64

Slide 26 (lung)