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Pheromones have evolved in all animal phyla, to signal sex and dominance status, and are responsible for stereotypical social and sexual behaviour among members of the same species. In mammals, these chemical signals are believed to be detected primarily by the vomeronasal organ (VNO), a chemosensory organ located at the base of the nasal septum .
A pheromone (from Ancient Greek φέρω (phérō) 'to bear' and hormone) is a secreted or excreted chemical factor that triggers a social response in members of the same species. Pheromones are chemicals capable of acting like hormones outside the body of the secreting individual, to affect the behavior of the receiving individuals. [1]
Each pheromone signal can elicit a distinct response based on the gender and social status of the recipient. [64] In insects, sex pheromones can be detected in very minute concentrations in the environment. Insect sex pheromones, usually released by the female to lure a male, are vital in the process by which insects locate each other for ...
Garter snakes also use the vomeronasal organ in pheromone communication. Odors and vomodors should be distinguished. Odors are chemicals detected by the sensory cells in the nasal epithelium through the process of olfaction. Vomodors are chemicals detected by the sensory cells from the vomeronasal organ through the process of vomerolfaction. [29]
Behavioral evidence suggests that these fluid-phase stimuli often function as pheromones, although pheromones can also be detected by the main olfactory system. In the accessory olfactory system, stimuli are detected by the vomeronasal organ, located in the vomer, between the nose and the mouth. Snakes use it to smell prey, sticking their ...
A pheromone (from Greek phero "to bear" + hormone from Greek – "impetus") is a secreted or excreted chemical factor that triggers a social response in members of the same species. Pheromones are chemicals capable of acting outside the body of the secreting individual to impact the behavior of the receiving individual. [5]
Insect pheromones are produced by a variety of exocrine glands consisting primarily of modified epidermal cells at various sites on the insect body. For example, the abdominal glands of the female silkmoth release traces of the ( E,E )-isomer of alcohol as well as the analogous ( E,Z )-aldehyde bombycal, in addition to the sex pheromone bombycol.
Pheromones can be used instead of insecticides in orchards. Pest insects are attracted by sex pheromones, allowing farmers to evaluate pest levels, and if need be to provide sufficient pheromone to disrupt mating. Chemical communication in insects is social signalling between insects of the same or different species, using chemicals.