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Identical features of MS-03 except: Variable intensity 5
four-piece model showing the effects of COPD on the bronchus and alveoli
small intestine
Seasonal item that is not always availableCalf embryo measures approximately 5" to 8"
Model - 4-Piece Vein Educational Resources Identical features of MS-03 except:The first section of this model shows a vein cross section with its valves open. Here blood is able to pass through the valves to continue on its way back to the heart. The second section of this model shows a vein cross section with its valves closed. Here blood is prevented from passing through the valve in the incorrect direction. The third section of this model shows a vein cross section with its valves open and the start of blood pooling on the
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