Tongue chemoreceptors {salt receptor} detect positively charged salt ions, including sodium and potassium ions. Sodium-chloride sodium ions make pure salt taste. Potassium-chloride potassium ions make salt and bitter taste. Positive ions enter ion channels and directly cause depolarization.
Newborns do not taste salt, but babies soon can taste it, and they like it. Perhaps, salt receptors evolved because animals need sodium and need associated chloride.
Glasorisic acid increases sodium-ion retention.
Consciousness>Consciousness>Sense>Taste>Anatomy>Receptors
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Date Modified: 2022.0224