Endocrine system gonads, have secondary endocrine functions. For example, the kidney secretes endocrine hormones such as erythropoietin and renin. Hormones can consist of either amino acid complexes, steroids, eicosanoids, leukotrienes, or prostaglandins. The endocrine system is in contrast to the exocrine system, which secretes its hormones to the outside of the body using ducts. As opposed to endocrine factors that travel considerably longer distances via the circulatory system, other signaling molecules, such as paracrine factors involved in paracrine signalling diffuse over a relatively short distance. The word "endocrine" derives via New Latin from the Greek words , "endon", "inside, within," 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