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Olfaction (also known as olfactics; adjectival form: "olfactory") is the sense of smell. This sense is mediated by specialized sensory cells of the nasal cavity of vertebrates, and, by analogy, sensory cells of the antennae of invertebrates. Many vertebrates, including most mammals and reptiles, have two distinct olfactory systems - the main olfactory system, and the accessory olfactory system (mainly used to detect pheremones). For air-breathing animals, the main olfactory system detects volatile chemicals, and the accessory olfactory system detects fluid-phase chemicals. For water-dwelling organisms, e.g., fish or crustaceans, the chemicals are present in the surrounding aqueous medium. Olfaction, along with taste, is a form of chemoreception. The chemicals themselves which activate the olfactory system, generally at very low concentrations, are called odorants. From Wikipedia under the
GNU Free Documentation License  news.softpedia.com 52px x 85px | 6.00kB [source page] Enlarge picture The general concept says that birds are almost devoid of olfaction Anyway our weak noses would make them shame But recent researches have showed it s not like that New  estium-concept.com 504px x 640px | 74.80kB [source page] association Roses Anciennes en France  psych.qub.ac.uk 246px x 350px | 33.10kB [source page] Aim To assess the role of scent and smell in influencing the behaviour of the great apes Background From Yahoo Image Search: "Olfaction"  cloacalkiss.blogspot.com amplexus Mon, 30 Nov 2009 02:46:00 GM Mate choice is influenced by MHC diversity through . olfactory. cues. MHC peptide complexes present at the cell surface carry information about our cellular genetic make-up. When these complexes are shed from the cell surface they dissolve ...  escholarship.org X L. Yang hu, 31 May 2007 20:57:40 GM qt41t1c9g7 repo Tea classification based on artificial . olfaction. using bionic . olfactory. neural network tea classification based on artificial . olfaction. using bionic . olfactory. neural network 2006 2006 2006 2006-01-01 2010-01-22 20060101 ...  ulecture.cn admin Sat, 12 Dec 2009 08:02:38 GM 12 14 Mobile Robot . Olfaction. . 2009 12 12 . : Mobile Robot . Olfaction. ; : Orebro Achim Lilienthal ; : 2009-12-14 09:00; : 4 ... From Google Blog Search: "Olfaction"  news.google.com Jamaica Observer Perhaps because we rely so much on sight and sound, human beings have among the weakest powers of olfaction , or smell, in the animal kingdom. ... news.google.com St. Louis Post-Dispatch Apparently, scientists admit that the study of human olfaction is in its infancy. They hope future discoveries will help people who have lost their sense of ... news.google.com This is London people use their own common sense (as well as their olfaction and gustation senses) to decide if something is off or not. and more » From Google News Search: "Olfaction" Marine olfaction in different temperatures of water? Q. If you were a marine scavenger living underwater, and there's a food source nearby, would you be able to pinpoint its location more easily in warm water or cold water? Thank you apnate, it's as I thought. Asked by Yaz - Fri Apr 28 07:17:41 2006 - - 1 Answers - 0 Comments A. Tough question! I really only have a hypothesis, so I'm not sure if this will help. Smell is triggered by suspended particles in a fluid (air or liquid are both, technically, fluids). The higher the concentration, the higher the strength of the olfactory stimulation. As per basic physics, temperature is a measure of the activity of the particles. So in terms of the particle activity, warm water is moving faster, meaning the scent particles are being diffused away fast, making it more difficult to track them back to their source. So my guess, based on this theory, is that cold water would leave a shorter but more intact scent trail back to the source. Answered by apnate - Fri Apr 28 09:15:03 2006 Which of the following sensory pathways are associated with chemoreceptors? Q. Which of the following sensory pathways are associated with chemoreceptors? A. olfaction B. equilibrium C. sight D. all of the above E. A and B not C Asked by Justin - Tue May 6 09:07:32 2008 - - 1 Answers - 0 Comments A. Answer is A. Olfaction requires receptors for chemicals in the air (chemoreceptors) that a single use and internalised after activation. Equilibrium is just a red herring... it relies on gradients and potentials Sight.. is photoreception with rhodopsin changing in light. Answered by Mubz - Tue May 6 09:57:12 2008 i need help with my biology homework (college level)?
Q. i need help with my biology homework. answers to any of these question are very helpful. you need to be 100 percent sure before answering please. here are some of the questions. 1.the tympanic membrane, organ of corti and ossicles all participate in the sense of ? a. vision b. balance c. olfaction d. gustation e. hearing 2. which of these senses is not dependent on cilia or microvilli? a. hearing b. smelling c. equilibrium d. taste e. touch 3.which of the following does not pertain to neurons? a. sodium pumps b. schwann cells c. myelin d. node of ranvier e. cell walls 4. which of the following is not a neurotransmitter? a. repolarization b. inhibition c. synapse d. integration e. sympathetic response 5. what is the correct order in… [cont.] Asked by Lu&In - Mon Jun 15 17:40:50 2009 - - 4 Answers - 0 Comments A. 1e 2e 3e 4..check the question dont think you wrote it right 5d 6c Answered by hunny414 - Mon Jun 15 17:49:09 2009 From Yahoo Answer Search: "Olfaction" |
