Lorenzini was born in buenos aires, argentina, the seventh of eight children. Sua linha lateral sente perfeitamente qualquer variacao hidrostatica. They form a series of tubelike structures just beneath and parallel to the skin. These receptors are concentrated on the heads of sharks and can detect the minute electrical potentials generated by the muscle contractions of prey. The response of the ampullae of lorenzini of elasmobranchs. Ampullae of lorenzini also called ampullae di lorenzini allow sharks to sense their environment thanks to gelfilled sacs within these electrosensitive pores. Le ampolle di lorenzini sono speciali organi di senso posseduti dagli elasmobranchi squali e razze e da alcune specie di condrostei e dipnoi. Ampulla of lorenzini definition, any of an array of electroreceptors in the head of sharks, skates, and rays capable of detecting weak electrical signals produced by muscular activity in other creatures. Carolina carola elena lorenzini 15 august 1889 23 november 1941 was a pioneer argentine aviator life. Esses receptores sao sensiveis a temperatura, salinida. Other articles where ampulla of lorenzini is discussed. Underside of a zebra shark stegostoma fasciatum showing mouth, teeth, barbels, ampullae of lorenzini natural electrical detectors located in the heads of sharks and rays which are sensitive to the electronic signals emitted by potential prey and spiracles. The ampullae of lorenzini are sensitive to weak electrical stimuli which presumably cause currents to flow along the jellyfilled tubes of the sense organ. Essas variacoes podem ser produzidas, por exemplo, por.
Ampullae of lorenzini can also detect earths electromagnetic field, and sharks apparently use. Sep 01, 2012 read morphological observations of ampullae of lorenzini in squatina guggenheim and s. Increase of the resting frequency occurs when the tubeopening is made negative to the capsule, and inhibition when the opening is positive, with opposite aftereffects in each case. Aretha stephanie formada em letras pela uneb campus iv, bahia. Ampulla of lorenzini definition of ampulla of lorenzini. Quimiorrecepcao e devido ao acurado sentido olfatorio. The ampullae of lorenzini are wellknown to generations of students of zoology as the jellyfilled canals exposed whenever the head of a dogfish or ray is skinned during elementary dissection classes. Ana paula lorenzini sao paulo, sao paulo, brasil perfil. Ampullae of lorenzini an overview sciencedirect topics.
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