If I approach this information from another angle you might understand it with less skepticism. This etheric body is superimposed over the physical body. It carries spatial information on how a developing fetus is to grow while it is in utero and also is the structural data for growth and repair of the fully matured adult. This energetic etheric body works together with cellular genetic mechanisms. In other words the physical body is connected to and dependent on the etheric body for cellular guidance.
Many illnesses have their origin in distortion of the supportive etheric field.
Through these meridians pass nutritive energy bearing coded information. A series of studies on the anatomic nature of the meridian system in animals were carried out in Korea during the 1960's by a team of researchers headed by Prof. Kim B. Han. Their studies of the tubular meridian system showed it to be divided into a superficial and a deep system. The deep system was further subdivided into various sub-systems. The first is the Internal Duct System which consists of tubules found free-floating within the vacuslar and lymphatic vessels, even penetrating the vessel walls.