Chemoreceptor : ¹Ì°¢±â°ü


³»¸ö ¡í °¨°¢ ¡í ¹Ì°¢±â°ü

Gustation :  ¹Ì°¢ ±â°ü

G protein & °¨°¢ ±â°ü
- ¹Ì°¢ ¼ö¿ëü  : ¹Ì°¢ ¸ÞÄ¿´ÏÁò
- ÈÄ°¢ ¼ö¿ëü  : ÈÄ°¢ ¸ÞÄ¿´ÏÁò
- ½Ã°¢ ¼ö¿ëü  : ½Ã°¢ ¸ÞÄ¿´ÏÁò

- ¹Ì·Ú,  À§ : Á¦2ÀÇ ¹Ì°¢±â°ü, - ¿Âµµ¿Í ¸À
±âº»¸À :  ´Ü¸À, °¨Ä¥¸À, ¾´¸À, - §¸À, ½Å¸À
±âŸ ¸À : ¸Å¿î(Hot), ¹° ¸À, Áö¹æ ¸À, ¾Æ¸°¸À, ¶µÀº¸À, CO2, ¹°¸À

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Bitter Quinine 0.000008 M
Sour HCl 0.0009 M
Umami Glutamate 0.0007 M
Salty NaCl 0.01 Mol
Sweet Sucrose 0.01 M




 

 

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Sites in the body where cells express the canonical taste receptor cascade
Taste buds comprise three types of elongated cells, one of which (type II/receptor cells, identified by green fluorescence) expresses the taste receptor (TR)-mediated transduction cascade culminating in activation of TrpM5. In the nasal cavity  (top right), solitary chemosensory cells express the ¡°taste¡± transduction cascade and synapse onto nerve fibers (red) arising from the trigeminal nerve [9]. In the trachea  (upper left), the ¡°taste¡±-like cells are brush cells, which release acetylcholine upon stimulation [40]. Some also make contacts with sensory nerve fibers (red) from the vagus nerve. In the stomach  (center lower right), a variety of enteroendocrine cells express elements of the taste transduction cascade [18,20,22] and release into the gut a variety of peptide hormones. Numerous brush cells in the gall bladder and bile ducts express the canonical taste transduction cascade [15,20]; their function is unknown. In the upper part of the small intestine  (e.g., duodenum, lower right), a variety of enteroendocrine cells express taste receptors and the associated downstream transduction cascade [16,17]. Some of these extend into the intestinal lumen while others do not. When activated, these cells release a variety of gut peptides as discussed in the main text. Micrographs courtesy of Dr. Marco Tizzano.