Histology - Respiration Images
Hyaline cartilage rings in the trachea maintain airway patency by preventing collapse, while the trachealis muscle (smooth muscle) at the posterior aspect allows flexibility and control of airway diameter during coughing or swallowing. Kulchitsky cells are neuroendocrine cells in the respiratory epithelium that belong to the APUD system. They secrete hormones like serotonin and play a role in airway regulation and chemoreception.
Hyaline cartilage and trachealis mm - patency support
Key Terms
Hyaline cartilage and trachealis mm - patency support
Kulchitsky cells - Amine Precursor Uptake & Decarboxylation (AUPD) - neuroendocrine cells
Smooth muscle, no cartilage, and aveoli. Is a branchiole.
Visceral pleura - Mesothelium (M, simple squamous epithelium) and thin layer of loose connective tissue
Brounchus Associated Lymphatic TIssue - BALT
Phagocytotic cells - dust cells - TEM, c= capillar, e = RBC, m = macrophage
Related Flashcard Decks
Study Tips
- Press F to enter focus mode for distraction-free studying
- Review cards regularly to improve retention
- Try to recall the answer before flipping the card
- Share this deck with friends to study together
| Term | Definition |
|---|---|
Hyaline cartilage and trachealis mm - patency support | |
Kulchitsky cells - Amine Precursor Uptake & Decarboxylation (AUPD) - neuroendocrine cells | |
Smooth muscle, no cartilage, and aveoli. Is a branchiole. | |
Visceral pleura - Mesothelium (M, simple squamous epithelium) and thin layer of loose connective tissue | |
Brounchus Associated Lymphatic TIssue - BALT | |
Phagocytotic cells - dust cells - TEM, c= capillar, e = RBC, m = macrophage | |
Emphysema - breakdown of interalveolar septum, ‘air trapping’ in large spaces, reduced air exchange. | |
Pseudostratified Epi, seromucous glands, hyaline cart. NO aveoli, so much be Trachea or Main Bronchus | |
Congenital Hiatal (diaphragmatic) Hernia - associated with Potter’s Sequence (Oligohydramnios) | |
Fibroblast - Synthesizes CT ECM | |
Clara cells (CC, Cl) - dome shaped. Increase as descend branchiolar tree, secrete surfactant, lysozyme, anti-inflammatory ptoreins | |
Cuboidal epithelial cells - account for 60% of alveolar lining cells - line 5% of alveolar lumen | |
Lung small cell carcinoma | |
Opening of alveolar duct (into alveolar sac) | |
Bronchioles (incl. terminal bronchioles) - Simple cuboidal epithelium, NO goblet cells! | |
Alveolarstem cells - give rise to type I & II cells | |
Trachea | |
Thin Interalveolar Septum and RBC | |
Smooth muscle in branchioles, incl. terminal branchioles. | |
normal interalveolar septum | |
Smooth muscle in 2’ and 3’ bronchi | |
Endothelial cell injury - sepsis | |
Pulmonary hypoplasia (left lung) - associated with Congenital Hiatal (diaphragmatic) Hernia | |
Intrapulmonary Bronchus | |
TEM - Lamellar bodies - syntheize, store, and secrete surfactant | |
1 - alveolar sac 2 - respiratory bronchiole 3- alveolar duct 4 - alveolus 5 - terminal bronchiole | |
Pulmonary burns (fire) - damage entire wall, edema, fluid in alveolar spaces, necrotic cells | |
Smooth muscle, no cartilage, and aveoli. Is a branchiole. | |
Macrophage - Phagocytosis, Antigen presentation, inflammatory responses | |
Alveolar macrophages (M) - black specks | |
Alveolar duct (black line) and alveolar sacs (AS) | |
Alveolar Patency - Elastic fibers. Ma = macrophage | |
Mucociliary escalator - synchronized beating of cilia sweep mucous coat upwards toward pharynx. CC - ciliated cells, GC - goblet cells | |
Alveolar injury - toxic fumes | |
Branchiole | |
Plasma Cell - B lymphocyte derivative - Secretes antibodies - immunoglobulins or Ig molecules | |
Terminal bronchioles in pseudoglandular period - end 16 weeks. (cuboidal epithelium) Capillaries present (not associated). No respiratory bronchi or alveoli |