RogueSpidor said:Many paralytic venoms used by spiders and other creatures affect the opening and closing of those channels. A paralytic will work either by causing the channels to open wide, causing the signals to continue non-stop, or slam shut, so no signals are sent and the muscles don't contract at all. A relaxing paralytic is not useful to a hunting, arboreal spider, since it will likely result in their prey falling out of the tree, making it hard for the spider to find and eat it. However, a convulsive paralytic will cause the prey to continue to grip, making it less likely to fall out of the tree. It does this by inducing the neurons to fire continuously. The black widow venom (latrotoxin) is an example of this, and is characterized by severe muscle cramps throughout the body, and particularly in the abdomen.
Molok said:I was wondering if someone could tell me where the electricity used for the nerves come from? and could someone with a good knowledge of the matter please explain how it works to me? :)
At a glance, wikipedia seems to do a decent job: http://en.wikipedia.org/wiki/Action_potentials
somasimple said:This works only if you consider that gradients remain constant. But it is impossible (at molecular level).
In the same way, this process is largely reduced and non constant. The active transport is then activated when necessary. The mystery of the "lost" energy consumption is solved.At resting potential, the concentration gradients are maintained by active transport.
Soma Simple, if you'll fully explain what you think is wrong with the Hodgkin-Huxley model then I can show you what your mistake is.
somasimple said:here =>
http://www.somasimple.com/forums/showpost.php?p=39321&postcount=66
Please, explain how it is possible, in an equipotential wire, to have opposite currents ?
And how it is possible that a resistance is able to create energy?
Cincinnatus said:What are you talking about? No one is claiming "equipotential wires have opposite currents" or that "resistances create energy" I'm not even sure what you mean by these.
Is there a biologist in the forum?Albert Einstein said:The important thing is not to stop questioning. Curiosity has its own reason for existing. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery every day. Never lose a holy curiosity.
Electricity is a form of energy that is generated from various sources such as fossil fuels, nuclear power, and renewable sources like solar, wind, and hydro power.
Electricity is generated by using a turbine to convert the energy from a power source (such as steam, falling water, or wind) into mechanical energy. The mechanical energy then turns a generator, which produces electricity.
The main sources of electricity are fossil fuels (coal, natural gas, and oil), nuclear power, and renewable sources like solar, wind, and hydro power. These sources are used to spin turbines, which in turn generate electricity.
Electricity is distributed through a network of power lines, transformers, and substations. The electricity is transmitted at high voltages to reduce energy loss and then stepped down to lower voltages for use in homes and businesses.
Electricity can be produced from both renewable and non-renewable sources. Fossil fuels and nuclear power are non-renewable, meaning they will eventually run out. However, renewable sources like solar, wind, and hydro power are constantly replenished and considered to be more sustainable options for generating electricity.