3120 4-PC Bronchus
4 stage cross-section of the bronchus deomonstrating the tissue changes occuring in asthma and chronic bronchitis. 4-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 of the smooth muscles, and the fibroelastic connective tissue and epithelial layers of the bronchus. All stages rotate on hinge pin.
Model Size: (4) 1 1/2" dua, x 7/8" (3 3/4") "
