This highly detailed color hand-painted Lungs & Heart Model is about 3-times life-size. The 3-dimensional lungs and heart are shown in cross-section, and the 2-piece larynx divides in half and can be removed for inspection. 33 numbered parts with identifying key. Mounted on a baseboard. Made of fiberglass. This heart & lung model is used in medical research, pharmaceutical and medical schools by teachers and students in educational programs for easy to learn and understand Human heart Anatomy and pathology. Also used in doctors offices and legal presentations. Size: 20" x 18"