Humans detect taste with taste receptor cells. These are clustered in taste buds and scattered in other areas of the body. Each taste bud has a pore that opens out to the surface of the tongue enabling molecules and ions taken into the mouth to reach the receptor cells inside.1  salty.2  sour. 3  sweet. 4  bitter.5  umami.umans detect taste with taste receptor cells. These are clustered in taste buds and scattered in other areas of the body. Each taste bud has a pore that opens out to the surface of the tongue enabling molecules and ions taken into the mouth to reach the receptor cells inside. 1  salty. 2  sour. 3  sweet. 4  bitter. 5  umami.
Raynaud's Syndrome May be the Cause of Your Fiery Fingertips. Another major cause of burning fingertips is Reynaud's Syndrome. This condition is brought about when the blood vessels that supply the hands and/or feet narrow. In individuals with Reynaud's, episodes of burning fingertips are exacerbated by exposure to cold.
Second-degree burns will blister. Photo Credit Finger index image by olegusk from Fotolia.com. Our fingers are often the first parts of our body to come in contact with something hot, like a flame, hot burner, or scalding steam. Other burns include sunburn, electrical burns and chemical burns. According to DermNet NZ, a first-degree burn involves only the superficial layer of skin, turning it red and sore. Second-degree burns go deeper, affecting the middle layers of skin, causing blisters to form and turning the skin red, wet and shiny.