Endocrine system endocrine glands are, in general, their ductless nature, their vascularity, and commonly the presence of intracellular vacuoles or granules that store their hormones. In contrast, exocrine glands, such as salivary glands, sweat glands, and glands within the gastrointestinal tract, tend to be much less vascular and have ducts or a hollow lumen. A number of glands that signal each other in sequence are usually referred to as an axis, for example, the hypothalamic-pituitary-adrenal axis. In addition to the specialized endocrine organs mentioned above, many other organs that are part of other body systems, such as bone, kidney, liver, heart and
Prabhat Ranjan Sarkar as physiologic counterparts, influencing the associated endocrine glands with the neuroendocrine system and the psychic part of the body. The philosophy of "Ananda Marga" consider the human body as composed of the same five "fundamental factors" as the rest of the universe as explained in P.R. Sarkar's theory of "". Every factor is distributed throughout the body, but is controlled by a controlling nucleus, or "Chakra", substations of the mind, each controlling their own assigned area. And just as the mind functions directly through the brain, the "Chakras" function through their own physical counterparts – the endocrine glands. The biopsychology