How tongue keeps its tastes right! 

Signals sent by tongue’s taste cells prevent the brain from confusing between bitter and sweet tastes, a study has showed. Humans perceive taste through thousands of tiny sensory organs called taste buds, which are located mostly on the upper surface of the tongue.

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Taste buds:

• Each taste bud contains 50 to 100 taste cells.
• It contain molecules, known as receptors.
• Receptors can detect each type of taste -sweet, bitter, sour, salty, or umami (savory).
• These taste cells then relay this information from the tongue to the brain.
• Using this knowledge, the scientists were able to rewire the taste-system of mice to perceive sweet stimuli as bitter tastes, and vice versa.
• The discovery provides new insights into how the tongue keeps its sense of taste organised despite the rapid turnover of the cells in its taste buds, the researchers said.

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According to a Research:

• Most portions of the brain circuits that govern taste are hardwired at birth, except in the tongue.
• In addition,where the cells in our taste buds taste receptor cells connect to taste neurons,said Research Scientist.
• It’s a highly dynamic process. Taste cells are replaced every one to three weeks, and one type of receptor may be replaced by a different type.
• Each time a new taste receptor cell is made.
• Furthermore,it needs to make the right connection with the brain,scientist said.
• When taste receptor cells are produced.
• The cells most likely express dedicated molecular signals that attract the right complement of taste neurons.
• “The taste system gives us a unique opportunity to explore how connections between taste cells and neurons are wired and preserved, in the face of random turnover of our sensory cells”.

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