Humans have about 10,000 tastebuds in our mouths, but they’re not all on the tongue. They can also be found under the tongue, on the cheeks, on the roof of the mouth, and on the lips. You may have noticed that the tastebuds on your lips are especially sensitive to salt.
Taste buds are located around the small structures on the upper surface of the tongue, soft palate, upper esophagus and epiglottis. On average, the human tongue alone has 2,000-8,000 taste buds. The majority of the taste buds on the tongue sit on potrusions of the tongue called papillae and there are four types of papillae.
1. Fungiform papillae – they are slightly mushroom shaped and sit at the tip of the tongue.
2. Filiform papillae – these are thing, V shaped cones that dont contain taste buds. They are more involved with gustation.
3. Foliate papillae – these are ridges found towards the posterior part of the tongue found on lateral margins.
4. Circumvallate papillae – They are present at the back of the tongue and on most people there are only about 3 -14 papillae.
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