This is pure unadulterated notion, but I think it is the mesodermal systems that give access to -

control of the autonomic functions of the body. Much work has been done, mostly in the last two or three years, on the subject of voluntary control over the autonomic system. It is certainly a promising field.

What I am saying is that I think that this control goes

by way of the mesodermal system.

"Ida Rolf Talks About Rolfing and Physical Reality"

edited and with an introduction by Rosemary Feitis"