The amrta in the Cosmic Ocean is Derived from the Sap of Trees

 According to the Mahabharata, the amrta in the cosmic ocean is derived from the sap of the trees growing on Mount Mandara which mingled with the waters during the churning of the ocean. Mandara, as we know, is one of the four "buttress mountains" supporting Mount Meru. These are the lobar bronchi that emanate from the principal bronchus (Meru) and form its base, as it were. In accordance with the strategy employed by the Puranics, the hierarchial collection of bronchi – each a tree in its own right – that emanate from the lobar bronchus (Mandara) may be referred to as a forest. The flow of oxygen molecules oozing out from these bronchial trees at the level of the acinus is their "sap." This "sap" then mingles, as it were, with the "waters–" the pulmonary arterial flow of deoxygenated blood contained in the capillaries which have now virtually united and become one with the respiratory conduit (by attaching to the alveoli). The deoxygenated blood becomes reoxygenated [the carbon dioxide molecules also exfiltrate but this fact is not utilized here] and the "waters," via this most wonderful "alchemical transformation," change into amrta, the nectar of the gods (neural entities). The oxygenated blood is the nectar! And this nectar now flows into the pulmonary veins, the "cosmic ocean" of the Puranas!