The adrenocortical glands act on the muscle tone by their effect on the blood cortisol level and the hydro-electrolytic balance via aldosterone.
They are related to the postural balance, centered on the umbilicus, which corresponds to the axis of embryonic development, the point of equilibrium between the two poles, cephalic and caudal.
The adrenocortical glands are part of the Reins-Bladder family in relation to the sense of hearing.