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16 de abr. de 2020 · Bernard Katz descobriu o funcionamento das sinapses. Ele descobriu a forma de comunicação dos neurônios, que é feita através de neurotransmissores liberados em vesículas na fenda sináptica, um espaço onde os neurotransmissores podem ser liberados e se ligarem aos receptores que estão na célula vizinha (alternativa B).
Bernard Katz (Leipzig, 26 de março de 1911 — Londres, 20 de abril de 2003) [1] foi um biofísico britânico nascido na Alemanha. [2] Foi agraciado com o Nobel de Fisiologia ou Medicina de 1970, por realizar estudos fundamentais sobre os mecanismos de transmissões de impulsos nervosos.
19 de jan. de 2015 · Drogas para a mente – Sir Bernard Katz, realizou estudos sobre o mecanismo de ativação de uma outra substância – a acetilcolina, localizada nas junções entre músculos e nervos – que tem a função de transmissor de impulsos nervosos, como por exemplo os destinados a movimentos do corpo.
20 de abr. de 2003 · In the 1950s Bernard Katz studied how impulses in motor neurons activate muscular activity by measuring variations in electrical charges. For example, he showed how the signal substance acetylcholine in synapses is released in certain amounts.
Biographical. Bernard Katz was born on March 26th, 1911, in Leipzig, Germany, of Russian Jewish origin, only son of Max Katz and Eugenie Rabinowitz. His school education was at the Albert Gymnasium in Leipzig (1921-1929). He studied Medicine at the University of Leipzig, 1929-1934; received the Siegfried Garten Prize for physiological research ...
Research. His research uncovered fundamental properties of synapses, the junctions across which nerve cells signal to each other and to other types of cells. By the 1950s, he was studying the biochemistry and action of acetylcholine, a signalling molecule found in synapses linking motor neurons to muscles, [9] used to stimulate contraction.
After receiving a medical degree from the University of Leipzig in 1934, Katz immigrated to England, where he pursued advanced studies at University College in London, taking a Ph.D. in 1938. Upon receiving a Carnegie fellowship, he studied in Australia (1939–42) and then served in the Royal Australian Air Force during World War II .
