The 45cm bisexual torso model (23 parts) is a detailed anatomical teaching tool suitable for biology and medical education. This model is made of plastic or resin and is divided into 23 detachable parts, covering the main human body systems such as bones, muscles, internal organs, etc. In biology teaching, this model can help students gain a deeper understanding of human body structure. By disassembling and reassembling various components, students can observe and learn the positional relationships of internal organs, the connection between muscles and bones, and how different systems work together. In addition, the intersex features of the model enable students to compare anatomical differences between males and females.