Models show Normal Thyroid, Hashimoto's Thyroiditis (lymphocytic thyroiditis), Graves' Disease, Papillary Carcinoma and the following structures: Hyoid bone, Thyroid membrane, Thyroid cartilage, Cricoid cartilage, and Trachea. Anatomy Model sizes: 2" x 1-1/4" x 2", 3" x 1-1/2" x 2", 2-3/4" 1-1/2" x 2-1/4", Larynx 5-1/2" x 2" x 3-1/2" Card size: 8-1/4" x 6-1/4" 5" x 6" x 1" White Base included with every model. Made of durable high quality materials.