Ancient Chinese who discovered and described the system of influencing internal actions of the body by stimulation of externally located areas, which we call acupuncture, were mostly interested in functional level of the body. They performed dissections (as mentioned in many classics, eg ch.12 of LingShu) and carefully measured the size, weight and location of internal organs, but they didn’t put too much attention to what Westerners called anatomy. It seems they were much more interested in answering the question how the body works, than how it looks like. In the 10th chapter of LingShu the meridians are described as invisible, running deep inside the body. Invisible means either not seen from outside or immaterial, purely functional.
Contrary to this idea of pure function, basis of Western Medicine is formed by materialism and reductionism . That is why European scholars rejected and ridiculed Chinese Medicine without taking effort to understand it. That reason lies also behind the desire to find physically measurable features and/or histological description of acupuncture points and channels. Many studies were performed on this field. Surprisingly they resulted it interesting findings.