taste bud - meaning and definition. What is taste bud
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What (who) is taste bud - definition

ANATOMICAL STRUCTURE CONTAINING GUSTATORY CELLS
Taste buds; Tastebud; Taste-buds; Taste pore; Papillae of the tongue; Tastebuds; Taste Bud; Taste Buds; Tongue and taste buds

taste bud         
also tastebud (taste buds)
Your taste buds are the little points on the surface of your tongue which enable you to recognize the flavour of a food or drink.
N-COUNT: usu pl, oft poss N
taste bud         
¦ noun any of the clusters of bulbous nerve endings on the tongue and in the lining of the mouth which provide the sense of taste.
Taste bud         
Taste buds contain the taste receptor cells, which are also known as gustatory cells. The taste receptors are located around the small structures known as papillae found on the upper surface of the tongue, soft palate, upper esophagus, the cheek, and epiglottis.

Wikipedia

Taste bud

Taste buds contain the taste receptor cells, which are also known as gustatory cells. The taste receptors are located around the small structures known as papillae found on the upper surface of the tongue, soft palate, upper esophagus, the cheek, and epiglottis. These structures are involved in detecting the five elements of taste perception: saltiness, sourness, bitterness, sweetness and umami. A popular myth assigns these different tastes to different regions of the tongue; in fact, these tastes can be detected by any area of the tongue. Via small openings in the tongue epithelium, called taste pores, parts of the food dissolved in saliva come into contact with the taste receptors. These are located on top of the taste receptor cells that constitute the taste buds. The taste receptor cells send information detected by clusters of various receptors and ion channels to the gustatory areas of the brain via the seventh, ninth and tenth cranial nerves.

On average, the human tongue has 2,000-8,000 taste buds. The average lifespan of these is estimated to be 10 days.

Examples of use of taste bud
1. Mammals taste sweet flavors via a receptor, a kind of molecular doorway, called T1R on their taste bud cells.