Respiratory Images Flashcards
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Respiratory epithelium (pseudostratified columnar epithelium)
- Thick basement membrane
- Prominent basal bodies under cilia
- Basal cells (dark) and goblet cells (clear) present
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Trachea
- Tube lined with respiratory epithelium
- Regular rings of hyaline cartilage (connected dorsally by smooth muscle)
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Tracheal mucosa closeup
- Lined with respiratory epithelium
- Thick basement membrane
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Nasal fossa: two chambers in skull separated by bony septum
Arrow points to a sinus
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Nasal fossa. Blank spot shows tooth germ
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Nasal Fossa Details
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Nasal fossa details
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Nasal fossa detail
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Nasal fossa, olfactory region
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Nasal fossa, olfactory nerve detail
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Nasal fossa, olfactory mucosa
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Larynx
- Vestibular folds are the false vocal cords (respiratory epithelium)
- True vocal cords (stratified squamous epithelium
- Separated by vocal folds
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Larynx details
- Skeletal muscle articulated cartilage (for talking)
- Hyaline cartilage for support
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Larynx, vestibular fold
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Larynx, vestibular fold epithelium
- Has serous glands in lamina propria to provide a moist environment for air before the true vocal cords
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Larynx, vocal cord detail
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Larynx, vocal cord mucosa detail
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Larynx, detail of epithelial transition in vocal region
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Lung (4x) with alveoli
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Lung, detail of pleura
Alveolar septum: thin wall for gas exchange from air to blood
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Lung, bronchus
- Cartilage is irregular rings or plates
- Smooth muscle in irregular bands - causes wavy (folded) mucosa
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Lung, regular bronchiole
- No cartilage
- Prominent smooth muscle - causes folds
- Less cilia than in bronchi
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Lung, terminal bronchiole
- Non-ciliated columnar or cuboidal epithelium
- No goblet cells
- Less smooth muscle than in regular bronchiole
- No folds
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Lung, respiratory bronchiole
- Non-ciliated cuboidal or columnar epothelium
- Clara cells (provide lubrication)
- Alveolar outpocketings - where gas exchange occurs
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Lung, detail of bronchial epithelium transition
- non-ciliated cuboidal epithlium at top
- ciliated epithelium on bottom
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Lung, overview of parenchyma
- Respiratory bronchiole: cuboidal epithelium, alveolar outpocketings
- Alveolar ducts: providechannel for airflow from bronchiolar condiuts to alveoli. Septa and cusps project from ducts
End of each duct is an alveolar sac
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Lung, alveolar organization
- Ten or more alveoli opening into common area (the alveolar sac)
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Lung, detail of aveolar septum
- Type 1 pneumocyte: flatted nucleus, can’t see cytoplasm
- Type II pneumocyte: large round nucleus, visible cytoplasm, found at junction of alveolar septums
Alveolar macrophages (dust cells): darker cells clumped at septal junction
Tracheal ring
Chondrocytes in lacunae
