Abstract
Summary
Rat submaxillary-sublingual and parotid gland secretions, collected directly from salivary ducts for initial period of 3 minutes during stimulation by subcutaneously administered pilocarpine, exhibit patterns of sodium-potassium concentration that differ markedly from each other. Submaxillary-sublingual saliva is essentially hypo-osmotic to serum, with sodium concentration of 12 meq/1 and K of 53 meq/1, while parotid saliva has a total sodium-potassium concentration above that of serum (Na, 142 meq/1; K 18.5 meq/1). A broad correlation between gland sodium and potassium levels, together with changes on stimulation, and levels of these electrolytes in secretions from these glands is indicated.
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