4-Piece Bronchus Model
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Four stage cross-section of the bronchus demonstrating the tissue changes occurring in asthma and chronic bronchitis. Four stages: normal bronchus, hypersecretion of the mucous gland, swelling with lymphoid aggregations and smooth-muscle spasm. The model includes: cartilage, mucous glands and plug, spiraling smooth muscles, and the fibroelastic connective tissue and epithelial layers of the bronchus. Each model measures 4.25″x1.25″x1.875″. The full size of the card measures 6.5″x5.25”. All stages rotate on a hinge pin. Our model is great for doctor's offices and healthcare facilities.