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.
Everyone has had a minor problem with a finger, hand, or wrist. Most of the time our body movements do not cause problems, but it's not surprising that symptoms occur from everyday wear and tear or from overuse. Finger, hand, or wrist problems can also be caused by injuries or the natural process of aging. Your fingers, hands, or wrists may burn, sting, or hurt, or feel tired, sore, stiff, numb, tingly, hot, or cold. Maybe you can't move them as well as usual, or they are swollen.