PRIMARY SENSATION OF THE TONGUE

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TASTE MODALITIES
For the primary sensations of taste, they are as follows;
1 SOUR; This occurs as a result of high acidity or high concentration of H+
2 SALTY; This occurs as a result of ionized salts or presence of certain cations especially Na+
3 Sweet ; This occurs mainly as a result of organic molecules
5 BITTER; This occurs as result of long-chain organic substances and alkaloids. Alkaloids are usually present as toxins
6 UMANI; This occurs as a result of glutamate

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