Material - It is detailedly hand painted with fine craftsmanship.The anatomical head and neck muscle model is made in non-toxic PVC material, easy to clean.Size:31*14*14cm/12.20*5.51*5.51inch. Features - Displays structures such as the laryngeal cartilages, laryngeal ligaments, laryngeal muscles, and laryngeal cavity. The cricohyoid joint is movable, simulating the opening and closing of the glottis. The epiglottis moves up and down to cover the laryngeal opening. Functional Mechanism Simulation - This 3X enlarged laryngeal structure and function model features movable arytenoid joints that simulate both opening and closing of the glottis,. Usage - The anatomical human model can be used not only as an anatomy learning tool for medical students, but also as a communication tool for doctors and patients. Features movable thyroid cartilage, allowing for dynamic demonstrations of vocal cord function and structure, making it ideal for educational purposes in ENT studies.providing valuable insight into vocal cord dynamics during speech and singing. Educational Tool for Vocal Training - Perfect for voice training and music education, this model helps students and instructors understand the anatomical structures involved in sound production, enhancing their vocal techniques and performances.