im writing a paper for physiology and i cant find this out.  all im coming up with is nobody knows why?
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THe KEnnedy Kreiger Institute is doing some research on this.  They are lacking funding but if you go to their website you may be able to find out who is in charge of the study and email them some questions
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1.  C - Lactic Acid and ATP\n\n2.  B - Oxygen\n\n3.  Because when a human muscle needs energy, it uses stored energy (ATP) first. After that, there is an oxygen debt in the muscles so the muscles have to figure out a way to get energy without oxygen.  That would be lactic acid fermentation.  Lactic acid fermentation does produce energy for the muscle to use, but also produces a byproduct called lactic acid that causes the burning sensation we feel in our muscles.  After exercising, heavy breathing is required to "repay" the oxygen debt that the muscle has created.\n\n4.  The acidity of the salt prevents bacteria from breaking down the meat.\n\n5. The mitochodria provide the energy needed for the centrioles to pull the sister chromatids apart during mitosis and meiosis.  They are evenly spread after the seperation because both new cells would need the mitochodria for energy as well.
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The contraction phenomenon in muscular cells are mostly due to interaction of two elements, ie, Actin and Myosin. Their interaction are powered by some molecules called ATP. The ATP is produced in some cellular structures called mitochondria. The role of food for human is to produce energy. Energy is produced by hydrolyzing of ATP.
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The hypothalamus in the brain is the temperature regulating\nmechanism in human beings. It tries by all means to maintain a core body temp of 37 deg celcius. Our enzymes function best at this temp. While the inner body has this temp, the surface of the skin may be at enviromental temp. If the enviromental temp is low\nthe body tries to to loose as little heat as possible to the enviroment. Bloodvessels carriying valuable heat in blood is re-directed to inner parts of the body. Brain stimulates the muscles to greater activity by causing shivering, to generate heat. When too hot blood flows to skin, sweat glands are more active
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I'm not sure, all the answers make sense, I thought maybe the fluids and gases in our bodies kept us afloat for a while then once dead the fluids and gases escape and the body sinks until it bloats and then rises again
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My hunch is that with a bit more time separation between the stimuli, that the nerve cells would have time to recover between firing signals, and that they could build a greater action potential.  \n\nI'm a bit perplexed as to why you'd be tackling this problem at 7:30 AM on Thanksgiving Day......or are you in Europe?
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I think it's protein. Because most of the human organ need protein to be form. The human organ, including heart are consist of cells, and they need protein to regenerate, I think this also happens when they were formed in fetus period.
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Good answers so far but the way blood actually fights gravity from the lower parts of the body up to the heart is through a very simple "step ladder" mechanism.  The blood is pumped up a small ways and past a valve that the pressure of the blood falling back against after the pressure of the pump subsides actually closes.  The blood sits there for a second waiting for the next heart beat that forces more blood up to and then opening that same valve past which more blood is pushed...and the whole thing repeats over and over....in this manner the valves in the veins provide footholds for the blood as it climbs its way up to the heart.  Check the site below for a more formal explanation and post an added question if you are interested in some good heart model websites...Take Care!\n\nI found the picture I was looking for on my old physiology cd.  At the link below you notice the valve at top left opening with the flow of blood then on thew top right closing as the blood flows back creating the "foothold" on the "step ladder" mechanism that allows the blood to move UP towards the heart and AGAINST gravity.\n\nhttp://img221.imageshack.us/img221/8952/0709lmx6.gif
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maybe what your teacher is trying to say here is the body temperature. now search for that answer. it's your homework.
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http://en.wikipedia.org/wiki/Cell_%28biology%29\n\ndoes this help any?
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http://jn.physiology.org/\nhttp://www.the-aps.org/publications/jn/
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this is not a stupid question.  afrend has the right answer. i figured it had something to do with focus
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It is a metabolic product which ultimately derives from glucose. You may have had some high sugar food stuffs. Then again there is the occasional error.
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Try this:\nHigh velocity causes increase in mass and high expenditure of energy.
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The answer is Pressure\n\n10 pts plz! im only level 1!
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Sorry for my previous answer, I was mistaken. \nI believe answer is B. A is correct, but I don't think it is why it affect target tissue for loger time. I don't think C is correct, but it could be. D is certainly wrong and E too. I haven't seen this in a while. Sorry I couldn't be more help.
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INFORMATION IS CONDUCTED ELETROCHEMICALLY BY THE NEURONS THROUGH VARYING CONCENTRATIONAS OF Na and K ions across the myelin seath of the neurons.in a neuron at rest there is more conc. of k ions on the inner side(this is the polarised region) and more conc. of Na ions on the outer side(depolarised region) .thus the inner side is at a greater potential than the outer side .when a stimulas is received the conc. in a particular regin of the neuron begins to change. K IONS move to the outer side and Na ions move to the inner side.now in that part of the neuron the outer membrane is at a higher potential than the the inner membrane. in the outer region the Kions are surrounded by large number of Na ions due to this a current sink develops and the K ion move back to the inner side while Na ions move back to the outer region and this region gets repolarised.but the region next to this gets deolarised in the process.thus the nerve impulse travels across the neuron as a wave of polarisation, depolarisation and repolarisation.\n           as the nerve impulse reaches the terminals of the neuron called dendrites the vesicles present there release ascetylcholine and this neurotransmitter transfers messages from one neuron to another and the above process continues till the message reaches the concerned organ.