Human Respiratory System Model Shows Respiratory Tract Alveoli Nasal Cavity Size 7.5x13'' for Education Lectures Use

Human Respiratory System Model Shows Respiratory Tract Alveoli Nasal Cavity Size 7.5x13'' for Education Lectures Use Multi-purpose Human Respiratory System Anatomical Structure Model Enlarged Human Alveolar Model for Hospital School Multifunctional Realistic Human Respiratory System Anatomical Model Shows Alveoli Right Bronchial Tree Respiratory Tract Human Respiratory System Model Shows Respiratory Tract Alveoli Nasal Cavity Weight:812.0g