Olfaction: Odor, Gas, Olfactory memory, Gail Vance Civille, Smell-O-Vision, Olfactory navigation, Monell Chemical Senses Center, Aroma compound - Tapa blanda

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 40. Chapters: Odor, Gas, Olfactory memory, Gail Vance Civille, Smell-O-Vision, Olfactory navigation, Monell Chemical Senses Center, Aroma compound, Nasal concha, Electronic nose, Parosmia, Foot odor, Vie Luxe International, Note, Canine cancer detection, Olfactometer, Odorant binding protein, Chemosensory protein, Odor detection threshold, Machine olfaction, Unpleasant odor, Olfactory fatigue, Odor threshold value, ISmell, Nasonov pheromone, Maple syrup event, Hyposmia, Hyperosmia, Key odorant, Waft, Odotope theory, Fetor, Odour activity value. Excerpt: An odor or odour is caused by one or more volatilized chemical compounds, generally at a very low concentration, that humans or other animals perceive by the sense of olfaction. Odors are also commonly called scents, which can refer to both pleasant and unpleasant odors. The terms fragrance, scent, and aroma are used primarily by the food and cosmetic industry to describe a pleasant odor, and are sometimes used to refer to perfumes. In contrast, malodor, stench, reek, and stink are used specifically to describe unpleasant odors. In the United Kingdom, odour refers to scents in general. In the United States, odor has a more negative connotation, such as stench or stink, while scent or aroma are used for pleasant smells. The sense of smell gives rise to the perception of odors, mediated by the olfactory nerve. The olfactory receptor (OR) cells are neurons present in the olfactory epithelium, a small patch of tissue in back of the nasal cavity. There are millions of olfactory receptor neurons that act as sensory signaling cells. Each neuron has cilia in direct contact with air. The olfactory nerve is considered the smell mediator, the axon connects the brain to the external air. Odorous molecules act as a chemical stimulus. Molecules bind to receptor proteins extended from cilia, ini...