Excitable (Joan Belgrave Album)
Excitable may refer to: * a song on the 1987 Def Leppard album Hysteria * a hit song by the British band Amazulu * a cell that can respond to stimuli See also * Excitable medium (mathematics / system analysis) * Cell excitability Membrane potential (also transmembrane potential or membrane voltage) is the difference in electric potential between the interior and the exterior of a biological cell. That is, there is a difference in the energy required for electric charges ...

Hysteria (Def Leppard Album)
''Hysteria'' is the fourth studio album by English rock band Def Leppard, released on 3 August 1987 through Mercury Records. It is Def Leppard's best-selling album to date, selling over 20 million copies worldwide, including 12 million in the US, and spawning seven hit singles. The album charted at number one on both the ''Billboard'' 200 and the UK Albums Chart. ''Hysteria'' was produced by Robert John "Mutt" Lange. The title of the album was thought up by drummer Rick Allen, referring to his 1984 car accident, the amputation of his arm, and the ensuing worldwide media coverage surrounding it. It is the last album to feature guitarist Steve Clark before his death, although songs co-written by him would appear on the band's next album, ''Adrenalize''. The album is the follow-up to the band's 1983 breakthrough ''Pyromania''. ''Hysteria''s creation took over three years and was plagued by delays, including the aftermath of drummer Rick Allen's accident that cost him his left ar ...
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Amazulu (band)
Amazulu were a British reggae/ska/ pop band from the 1980s comprising five women and one man. They achieved success in the UK charts with four top-20 hits, the biggest being " Too Good to Be Forgotten" in 1986. Career Early days and success The name Amazulu is taken from the Zulu language word for the Zulu people. They originally wanted to be named Amazon but an American rock band already had the name. The name Amazulu came about when Sharon Bailey and Lesley Beach went to see a South African play by the same name and met the playwright, who gave his permission to use the name. The band was started by Bailey, the band's original manager and Lesley, the saxophone player, together with Rose Miner, the original lead singer. With Debbie Dread joining on drums, initially all the members were female. Miner was later replaced by Anne-Marie Ruddock, and Dread was replaced by John "Nardo" Bailey, who they called their token male. Miner went on to become a dancer, dance teacher and per ...
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Cell (biology)
The cell is the basic structural and functional unit of life forms. Every cell consists of a cytoplasm enclosed within a membrane, and contains many biomolecules such as proteins, DNA and RNA, as well as many small molecules of nutrients and metabolites.Cell Movements and the Shaping of the Vertebrate Body
in Chapter 21 of
Molecular Biology of the Cell
'' fourth edition, edited by Bruce Alberts (2002) published by Garland Science. The Alberts text discusses how the "cellular building blocks" move to shape developing embryos. It is also common to describe small molecules such as ...
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Excitable Medium
An excitable medium is a nonlinear dynamical system which has the capacity to propagate a wave of some description, and which cannot support the passing of another wave until a certain amount of time has passed (known as the refractory time). A forest is an example of an excitable medium: if a wildfire burns through the forest, no fire can return to a burnt spot until the vegetation has gone through its refractory period and regrown. In chemistry, oscillating reactions are excitable media, for example the Belousov–Zhabotinsky reaction and the Briggs–Rauscher reaction. Cell excitability is the change in membrane potential that is necessary for cellular responses in various tissues. The resting potential forms the basis of cell excitability and these processes are fundamental for the generation of graded and action potentials. Normal and pathological activities in the heart and brain can be modelled as excitable media. A group of spectators at a sporting event are an excitable ...
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