The asexual trunk model is a common tool for medical teaching and experimental demonstration. Its core principle lies in presenting complex human anatomy knowledge to learners in an intuitive and operable way through highly simulated human trunk structures. This model usually removes gender features while retaining key anatomical structures such as the head, chest cavity, abdominal cavity and some limbs, making it more universal and convenient for application in different medical disciplines.

Its design principle is mainly reflected in three aspects:

Firstly, the model is made based on the real human body's proportions and anatomical positions. It often contains detachable organs such as the heart, lungs, liver, stomach and intestines, which are convenient for learners to repeatedly remove, observe and assemble them, thereby deepening their understanding of the spatial relationships and functions of the organs.

Secondly, some high-end models use layered or semi-transparent materials, allowing students to directly observe the hierarchical structure between organs and the distribution of blood vessels, simulating the observation Angle during clinical examinations.

Finally, asexual design makes the model applicable to a wider range of teaching scenarios, avoiding the limitations or inconveniences brought about by gender characteristics.

In teaching and research, the principle of this model not only helps students quickly master anatomical knowledge, but also assists in medical demonstrations, clinical training and health education. It achieves an intuitive transition from "books to reality" by transforming abstract theoretical knowledge into concrete and vivid displays.