How It Works

How do taste buds work?

Asked by Stephen Blaze

Taste buds are sensory organs that are found in the little bumps (or papillae) on the tongue. The tongue contains about 8,000 taste buds and they’re replaced approximately every two weeks. Sensitive microscopic hairs on the taste buds (microvilli) pick up dissolved chemicals from food and send electrical signals to the brain that distinguishes between five different tastes: sweet, bitter, savoury (umami), salty and sour. Varying sensitivity to these tastes occurs across the whole of the tongue. But taste buds alone cannot tell us the exact flavour of food. Other factors such as smell, spiciness, temperature and texture also contribute to the eventual taste. So if you hold your nose while you eat then your brain won’t get the full taste story!

Scout Davies, Science Museum




  • Hiw cool

  • Hailee Shay

    8 freakin thousand! That is unreal that we have that many little taste buds on our tongue. Short. Simple. Sweet. Loved this post.

    You can find more weird facts about your mouth on this dentist’s site in Utah. It’s pretty interesting, but then again, I find some weird things interesting. So I guess you can be the judge of that.
    http://utahjazzdentist.com/crazy-facts-mouth-wont-believe/