Jacobson's organ - Factbites

Jacobson's organ - Factbites
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Topic: Jacobson's organ

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	Amazon.com: Books: Jacobson's Organ : And the Remarkable Nature of Smell
		When the stimuli from Jacobson's organ are somehow erroneously conveyed to the cortical, "conscious" areas of the brain, a person experiences things he cannot reasonably explain; but the brain tries to explain everything at all costs, and that is what we perceive as madness.
		Beyond rehashing what has become widely accepted, Watson attempts to discuss the importance of Jacobson's Organ, the "unconscious partner to the nose." Jacobson's Organ, also called the vomeronasal organ, consists of two small pits in front of the nasal septum with nerves feeding directly to the most primitive, limbic area of the brain.
		This vomeronasal organ has been implicated in the reception of pheromones, those ephemeral chemical signals animals use to communicate nonverbally.
	www.amazon.com /exec/obidos/tg/detail/-/0452282586?v=glance (2942 words)

	Vomeronasal-Flehmem
		The vomeronasal organ (organ of Jacobson) is lined with olfactory cells, and has central pathways different from those of olfactory epithelium.
		The vomeronasal, or Jacobson's, organ occurs in many mammalian species, but not in higher primates, including man. Their structure suggests that they are used only intermittently, as accessory olfactory organs.
		The external sign that a cat is using its vomeronasal organ is the gape or 'Flehmen' response, a 'grimace' in which the upper lip is raised and the mouth is held slightly open for a few seconds.
	www.maxshouse.com /vomeronasal-flehmem.htm (534 words)

	Meat Quality and the Jacobson's Organ - The Alaska hunting forum
		The Jacobson's organ is basically a complex chemical analyzer, and deer, along with numerous other species, use it to determine breeding status of the opposite sex.
		Most vertebrates have an organ in the roof of their mouth known as the Jacobson's organ.
		The best explanation that I've found as to why the meat of any ungulate generally tastes worse during the rut is this.
	www.outdoorsdirectory.com /akforum/akhunting_message.php?id=37211 (534 words)

	Animal House : boa constrictor
		Jacobson organ : + + + (chemical stimuli are catched by the tongue and transported in the buccal cavity to the Jacobson organ which send the informations to the brain ; this fonction is used in recognizing, attack, prey tracking, sexual behavior...).
		symptoms : respiratory problems, buccal and nasal secretions, anorexia.
	perso.dixinet.com /animaux-infos/eboa.html (534 words)

	Feeding of the Garter Snake
		These scent molecules are pressed up to a special organ, the Jacobson's organ, in the roof of the mouth and this is how the snake "smells" (Johnson, 1989).
		The lack of keen sight and sensitive hearing has led to the development of the Jacobson's organ for a more specialized sense of smell.
		The snakes red, black tipped tongue, or stinger, flickers in the air testing for scents.
	www.science.mcmaster.ca /Biology/Harbour/SPECIES/CGARTER/FEEDING.HTM (378 words)

	Fidelio Article - Schiller Institute-Moses Mendelssohn and the Bach Tradition- S. Meyer- Fidelio Magazine
		The first steps in this direction were taken by his associate, Rabbi Israel Jacobson, who introduced, for the first time in a synagogue, both hymns in German and the use of the organ in the prayer service.
		An early Jewish educational institution, it was modelled on the Berlin Free School curriculum by Meyer Ehrenberg, who had been placed in the school by Rabbi Israel Jacobson, Friedlander's associate.
		Near the end of his life, Sulzer also endorsed the use of the organ, and many of his works were later revised for its inclusion.
	www.schillerinstitute.org /fid_97-01/992_mend_spm.html (378 words)

	Vomeronasal organ - Wikipedia, the free encyclopedia
		The vomeronasal organ (VNO) or Jacobson's organ (sometimes misspelled "Jacobsen's") is an auxiliary olfactory sense organ in some tetrapods.
		The vomeronasal organ is used in the detection of pheromones in some animals such as mice, although some pheromones are detected by the regular olfactory organ, and the vomeronasal organ detects other compounds in addition to pheromones.
		Anatomical studies demonstrate that in humans the vomeronasal organ regresses during fetal development, as is the case with some other mammals, including cetaceans, some bats, and apes.
	en.wikipedia.org /wiki/Vomeronasal_organ (266 words)

	VOMERONASAL CHEMORECEPTION IN VERTEBRATES
		The Vomeronasal Organ is an olfactory structure in the nose, originally described in 1813 by the Danish court veterinarian Ludwig Jacobson.
		The organ serves to alert the emotional brain to the presence of specific semiochemicals, or signal molecules, which identify sex or status.
		Vomeronasal olfaction is examined in its evolutionary perspective, from molecular capture of scents to the consequent changes in reproductive activity.
	www.icpress.co.uk /books/lifesci/p230.html (266 words)

	Organ
		Vomeronasal organ The vomeronasal organ or Jacobson's organ is an auxiliary flehmen to direct compounds to this organ, w...
		Otolith organ The otolith organs (the utricle and the saccule) are structures in the elevator).
		Organ transplant An organ transplant is the transplantation of an organ (or part of one) from one body to another, for t...
	www.brainyencyclopedia.com /topics/organ.html (396 words)

	Green Iguana Mouth
		Part of the chemosensory structure leading to the vomeronasal organ (also called the Jacobson's organ).
		The tongue's forked tip (not seen in this drawing) contains chemosensory receptors which, when the tongue tip is brushed against the fenestra exochoanalis, passes them onto the vomeronasal organ.
		The tips of the iguana's tongue are a deeper, darker red than the rest of the tongue, though this coloring may not become apparent until the iguana is two or more years old and the tongue considerably larger than it is in hatchlings.
	www.anapsid.org /iguana/mouth.html (237 words)

	Jacobson - Wikipedia, the free encyclopedia
		See Jacobson's cartilage (Jacobson's turbinal), Jacobson's nerve, Jacobson's organ.
		Emily Jacobson, see List of American sabre fencers
		This is a disambiguation page: a list of articles associated with the same title.
	en.wikipedia.org /wiki/Jacobson (90 words)

	Jacobson - Wikipedia, the free encyclopedia
		See Jacobson's cartilage(Jacobson's turbinal), Jacobson's nerve, Jacobson's organ.
		Emily Jacobson, see List of American sabre fencers
		Sada Jacobson, see List of American sabre fencers
	en.wikipedia.org /wiki/Jacobson (135 words)

	Human Sexual Chemistry
		Called Jacobson's Organ, it was described in humans as long ago as the 18th century.
		"Once Crosby concluded that humans didn't have a vomeronasal organ, no one challenged her view."
		Although the precise anatomy of the VNO varies considerably from one vertebrate species to the next, Newman says it generally is a pair of small sacs lined with sensory neurons, tucked inside the vomer bone, where the hard palate and nasal septum meet behind the nostrils.
	www.tdl.com /~erox/SixthSense/StoryTwo.html (2444 words)

	Human Sexual Chemistry
		Called Jacobson's Organ, it was described in humans as long ago as the 18th century.
		"Once Crosby concluded that humans didn't have a vomeronasal organ, no one challenged her view."
		To probe the function of the human VNO, Monti-Bloch devised a e combination electrode and microspritzer that he used to blow small amounts of the compounds Berliner had isolated from human skin directly into either the VNO or olfactory epithelium of volunteers, while simultaneously recording the surface electrical potential of the tissue.
	www.tdl.com /~erox/SixthSense/StoryTwo.html (2444 words)

	FreisslerSoft Books Jacobson
		Jacobson's Organ: And the Remarkable Nature of Smell
		Modern Theories of Language: The Empirical Challenge (Sound and Meaning, the Roman Jacobson Series in Linguistics and Poetics)
		Edith Jacobson Begins to Fly and Other Poems (Minnesota Voices Project : No. 53)
	www.freisslersoft.com /ja/Book_Jacobson.html (2444 words)

	Pheromones: More Fiction than Fact!
		In mammals and reptiles, pheromones may be detected by the vomeronasal organ, or Jacobson's organ, which lies between the nose and mouth, although some are detected by the nose.
		Their use among insects has been particularly well documented, although many vertebrates also communicate using pheromones.
		Pheromones are a popular device in fiction, including the novel Jitterbug Perfume by Tom Robbins and the film Love Potion Number Nine.
	www.daisyorganicessentials.com /facts/pheromones.php (195 words)

	Jacobson - Wikipedia, the free encyclopedia
		See Jacobson's cartilage(Jacobson's turbinal), Jacobson's nerve, Jacobson's organ.
		Emily Jacobson, see List of American sabre fencers
		Nathan Jacobson, see List of mathematical topics (J)
	en.wikipedia.org /wiki/Jacobson (135 words)

	FlashKit Forums Archive - Scientist on life after death issue:
		While humans don't display the Flehmen reaction, recent studies have demonstrated that Jacobson's organ functions as in other mammals to detect pheromones and to sample low concentrations of certain non-human chemicals in air.
		Since its discovery, comparisons of human and animal embryos led scientists to conclude that Jacobson's organ in humans corresponded to the pits in snakes and vomeronasal organs in other mammals, but the organ was thought to be vestigial (no longer functional) in humans.
		While snakes and other reptiles flick substances into Jacobson's organ with their tongues, several mammals (e.g., cats) exhibit the Flehmen reaction.
	www.flashkit.com /board/history/topic.php/439384-1.html (3226 words)

	Notes From an Eclectic Mind: Comment on Home Again
		This draws the scent back to a special organ, far back on the roof of the cat's mouth, called the Jacobson's organ.
		(the Jacobson's organ is also known as the vomeronasal organ.): Flehmen reaction-
		When cats investigate the scents left by other cats, they may draw back their lips and grimace in what is known as the Flehmen reaction.
	www.ranablog.com /mt/mt-comments.cgi?entry_id=1222 (332 words)

	Why Do Cats Make a Funny Face? - PetPlace.com
		When your cat exhibits the Flehmen response, it is to open the vomeronasal organ, or Jacobson's organ, a tiny cigar-shaped organ located in the roof of the mouth.
		This organ is thought to supplement the olfactory system and is especially concerned with the detection of pheromones.
		It is thought that Flehmen provides information about the identify of the cat that left the scent, whether or not it is a stranger, and what is its sex and reproductive status.
	www.petplace.com /cats/why-do-cats-make-a-funny-face/page1.aspx (412 words)

	PetPlace.com - Article: Why Do Cats Make a Funny Face?
		When your cat exhibits the Flehmen response, it is to open the vomeronasal organ, or Jacobson's organ, a tiny cigar-shaped organ located in the roof of the mouth.
		This organ is thought to supplement the olfactory system and is especially concerned with the detection of pheromones.
		It is thought that Flehmen provides information about the identify of the cat that left the scent, whether or not it is a stranger, and what is its sex and reproductive status.
	www.petplace.com /articles/artPrinterFriendly.asp?conID=23584 (441 words)

	snake repellant for snake control
		The Jacobson's organ in snakes is used with the tongue to sense its environment.
		When the snake pulls in its tongue, the vapor molecules are transferred to the odor-sensitive Jacobson's organ.
		Applying lime in an area to repel snakes may be hazardous to humans and pets.
	www.pestcontrol-products.com /snake_away.htm (406 words)

	March 96 - Macintosh Q & A
		Many other animal species have a Jacobson's organ, from rattlesnakes to bighorn sheep, but humans don't.
		By holding his mouth open and not breathing, your cat is concentrating the molecules to be sensed over his Jacobson's organ, allowing it to do its job.
		The behavior you've noted is called the flehmen reaction (flehmen is a German word with no satisfactory English translation).
	www.mactech.com:16080 /articles/develop/issue_25/macintoshqa.html (4411 words)

	Expressions
		This is called "Flehmen." Not a "yuck," it's a reaction to strange smells that lions of both sexes show, allowing the Jacobson's organ in the roof of the mouth to "taste" smells.
		Not even Einstein had a jacobson's organ...humans don't engage in flehmen.
		The lioness on the left is giving you an intent look that could signal any sort of approach, from stalking prey to preparing for a play.
	www.tigertouch.org /expressions/expressions.html (192 words)

	Flehmening - Cats sensing smell with an open mouth
		The cat draws in air, capturing the scent, and transferring it to a small specialized sac called the 'vomeronasal organ' or 'Jacobson's organ.' This organ is located high up in the roof of the mouth, and has a large blood supply.
		Flehmening occurs when your cat smells something and then opens its mouth slightly, wrinkles his nose, and curls back his upper lip.
		It is easy to see flehmening as a reaction against a bad odor when it is actually just the opposite.
	www.cat-olholics.com /flehmening.html (553 words)

	Animal behaviour - Resources for applied ethology
		The cat has a much more acute sense of smell than we have, and in addition to having a larger olfactory system, they also have the vomeronasal organ (Jacobson’s organ).
		It is thought that the flehmen reaction (curling of the upper lip) is a behaviour that exposes the vomeronasal organ to sex pheromones present in the female cat’s urine or vaginal area (Hart, 1980a).
		The miaow is for greeting, the growl and yowl for aggression and the hiss and spit is a defensive reaction.
	www.animalbehaviour.net /JudithKBlackshaw/Chapter7a.htm (5007 words)

	Flehmen Lion - Masai Mara Game Reserve, Kenya
		Male lions have a specialized organ for detecting scent called the Jacobson's organ, and when using this organ, lions exhibit a facial expression called “flehmen”.
		Flehmen Lion - Masai Mara Game Reserve, Kenya
	www.dongettyphoto.com /kenya/LiononKopje.html (33 words)

	Biological Glossary
		Jacobson's organ: In some vertebrates, an accessory olfactory organ developed in connection with the roof of the mouth.
		Jaw: Often loosely applied to any movable, toothed structures at or near the mouth of an animal, such as the scolecodonts of annelids.
		In vertebrates, the jaw is derived from the first gill arch.
	www.guiamarina.com /glossary/J.htm (33 words)

	Colby-Sawyer College News Home
		Before the film screening, Antoinette Jacobson will present a demonstration of a fire organ or pyrophone, a musical instrument featured in the film.
		The film focuses on a teenage girl, who, traumatized by the loss of her best friend, finds solace in the company of a reclusive artist who makes healing music through a fire organ.
		NEW LONDON, N.H., Oct. 22, 2004 � Those interested in learning more about candidates in the Nov. 2 elections will have a chance to do so at three upcoming events on the Colby-Sawyer College campus.
	www.colby-sawyer.edu /news (33 words)

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In the News (Fri 25 Dec 09)