Histology Flashcards
Nasal Cavity
Lined by respiratory epithelium (psuedostratified ciliated columnar), underneath is lamina propria and connective tissue (containing seromucous glands)
Ooropharynx
Transmits both air and food so lined by non keratinised squamous epithelium
Larynx
Walls made of cartilage and muscle, except for vocal cords which are lined with stratified squamous epithelium
Trachea
Respiratory epithelium Basal lamina Lamina propria Submucosa (includes seromucous glands) Cartilaginous rings
Bronchi
Respiratory epithelium
Lamina propria (smooth muscle and seromucous glands)
Irregular shaped cartilage
Bronchioles
No cartilage
Cuboidal epithelium
Lamina propria (smooth muscle)
Terminal bronchioles
Contain Clara cells
Clara cells
Detoxify
Immune modulation
Surfactant production
Respiratory Bronchiole
Alveoli interrupt wall of airway
Type 1 alveolar cells
Simple squamous epithelium
90% alveolar surface
Blood air barrier
Type 2 alveolar cells
Polygonal shape with mircrovilli
Contains surfactant
Alveolar macrophages
Phagocytose inhaled particles
Migrate up bronchiole tree to be swallowed