Physiology
Chemicals that stimulate gustatory receptor cells are known as tastants. Once a tastant is dissolved in saliva, it can make contact with the plasma membrane of the gustatory hairs, which are the sites of taste transduction.
Tongue is composed of many taste buds, and each taste bud is composed of taste cells that can sense different tastes. There are taste cells for: sweet, bitter, salty or sour, and umami.
Read more about this topic: Tongue
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