✔ This model shows the trachea of human smokers and the trachea of healthy people. By comparing the design, you can combine theory with practice and fully understand and master relevant knowledge to get the best learning effect ✔ Shows the difference between human trachea and normal trachea, with an English instruction card. With this model, students can learn directly about the anatomical structure of the human body ✔ Crafted from durable, food-grade PVC material, this model features hand-painted details for a clear and accurate representation of both healthy and pathological trachea structures ✔ Perfect for healthcare education, this anatomy model serves as an effective patient education tool in doctor's offices or healthcare facilities, aiding in the comprehension of trachea-related knowledge ✔ Can be used as a teaching of physical health knowledge of the visual aids. So you can Lively explain the relevant knowledge to the students by the model, let students to quickly understand and master, thus improving learning efficiency