Bronze model in four parts
- SKU: G33
4-step cross-section of the trachea which demonstrates tissue changes in asthma and chronic bronchitis. The four stages show: - Normal trachea - Hypersecretion of the ventricle - Swelling with lymphoid aggregates - Smooth muscle cramps. The model includes cartilage, mucous membranes and plug, spinal smooth muscle and fibroelastic connective tissue and epithelial layer of air tube. All steps rotate on a hinge pin. The model is movable but can not be picked apart. Diameter 3.5 cm, ten cm Length, Weight 120 g.
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