Histology of the respiratory system

Nour Taha

Respiratory system

Respiratory epithelium

Goblet , brush cells

Olfactory epithelium

nasopharynx

oropharynx

Larynx (lower portion)

Cricoid cartilage

Tracheal cartilage

Respiratory epithelium lining

Esophagus

Larynx

trachea

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trachea

Trachea

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Bronchi

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Hyaline Cartilage Plates

Smooth muscle band

Tertiary (segmental) bronchus.

bronchioles

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Terminal bronchiol

Terminal Bronchiole

Club(clara) cells

Respiratory Bronchiole

Alveolar Ducts and AlveolarSacs

Alveolar Sac

SEM shows in three dimensions the relationship of alveoli to terminal and respiratory bronchioles

Alveolar spaces - Septa Type I Pneumocytes

Type II Pneumocyte

Ultrastructure of type II alveolar cells

Blood air barrier

plurae