|
|
|
cheap las vegas show tickets Terri Schiavo's Brother Says the Press Is Still Lying About His Sister
|
|
<snip Regardless of what you have read, it is a simple fact of anatomy and physiology that the heart and kidneys can function perfectly well without the CNS. Odd that much of what I have read about this came from varying levels of BLS (Basic Life Support) training and disagrees with you. Odder still is that the ALS people who tought teh course were taugh the same thing in greater detail. Where did they go wrong and why don't you tell them. To say that your organs do not rely, to one extent or another depending on the organ under discussion, on input from the CNS and the brain is ludicrous. How about if you do an Internet search, and find for me a reliable source that says that the CNS is necessary for the function of the heart and kidneys, (and not just for fine-tuning blood pressure and fluid balance)? Just to help you get started, you may find some information about the effects of anti-diuretic hormone, ADH, which is produced by the CNS. It has effects on fluid balance in the kidneys and blood pressure, but is not necessary to keep the kidney working. Happy hunting. The autonomic nervous system is responsible for maintaining and controlling the involuntary effectors of the human body. This means that smooth muscles and involuntary actions, such as the heart, are regulated by the part of the nervous system that requires no conscious thought, but still receives directive from the brain. The human brain need not think about the heart beat, it happens because there is a specified section of the brain known as the autonomic nervous system. Every portion of the body, whether controlled by conscious thought or hormonal release, is technically controlled by brain function. In the case of autonomic nervous system elements, variables and adjustments are made via the brain s response to stimuli. The brain sends a signal to the heart during strenuous exercise, explaining that it requires the heart to beat faster with more force in order to sustain the body s health during this level of activity. ****The autonomic nervous system is not entirely independent of the central nervous system or the peripheral nervous system even though it does function without intentional decision or thought by the brain. *****The involuntary effectors which are dependant upon the autonomic nervous system include the cardiac muscle, visceral smooth muscle tissue, and glandular epithelium which is cell which secrete substances such as sweat, mucous, milk, wax, and saliva. This can mean that the variances of the diverse effectors might be part of visceral organs, blood vessels, or specialized functions that are adherent to other organs. In some cases, only part of an organ is controlled via the autonomic nervous system. http://www.medical-look.com/human_anatomy/systems/Autonomic_nervous_s... (emphasis mine) The ANS is predominantly an efferent system transmitting impulses from the Central Nervous System (CNS) to peripheral organ systems. Its effects include control of heart rate and force of contraction, constriction and dilatation of blood vessels, contraction and relaxation of smooth muscle in various organs, visual accommodation, pupillary size and secretions from exocrine and endocrine glands. Autonomic nerves constitute all of the efferent fibres which leave the CNS, except for those which innervate skeletal muscle. There are some afferent autonomic fibres (i.e. transmit information from the periphery to the CNS) which are concerned with the mediation of visceral sensation and the regulation of vasomotor and respiratory reflexes, for example the baroreceptors and chemoreceptors in the carotid sinus and aortic arch which are important in the control of heart rate, blood pressure and respiratory activity. These afferent fibres are usually carried to the CNS by major autonomic nerves such as the vagus, splanchnic or pelvic nerves, although afferent pain fibres from blood vessels may be carried by somatic nerves. http://www.nda.ox.ac.uk/wfsa/html/u05/u05_010.htm All of the above is perfectly correct. However, note that they are saying that the ANS *regulates* various body functions. Most everything can do its job without ANS input, just not as precisely. Think of it from an evolution standpoint: the various organs had to evolve to function by themselves before the ANS could evolve to help coordinate their function in a large, complex being. In fact, everything the ANS controls is also influenced by chemicals in the blood: epinephrine, vasopressin, dopamine, etc. This control by circulation is a slower, less sophisticated method of regulation, but it is still present. The nervous system is basically a way to get the chemicals where they need to be in a faster, more precise way. However, it is not necessary for basic functions. One of the treatments for peptic ulcers, before they were discovered to be caused by a bacterial infection, was to cut the vagus nerves where they enter the abdomen. That means that the entire GI tract, south of the esophagus, is deprived of its parasympathetic nerve supply, yet continues to function. Division of the sympathetic nerves is also done, usually for conditions where there is insufficient blood flow to the hands. The sympathetics cause blood vessel constriction, so sympathetic division causes them to relax, and (hopefully) improve blood flow. ANS does not function without CNS. ANS functions, such as control of heart rate and force of contraction, would therefore cease in the absence of CNS. How could the heart continue to function perfectly well per your claim, without control of heart rate and contraction? Cardiac muscle has a slow leak in its membrane potential, causing it to spontaneously contract at regular intervals. When one cell contracts, the signal spreads across the entire heart, So, according to you, my mother really didn't need that pacemaker, right? What causes the first cell to contract? If you say slow leak , I will know that you have had no medical training at all. A diseased heart may not function normally for a wide variety of reasons. The doctor said directly that the CNS was not stimulating the heart at regular intervals, causing an arrythmia which worstened over the years causing cardiac arrest before they put the pacemaker in, yet, according to you, she diidn't need it. I don't believe you've had a lick of medical training.
|
|
|
|
|
|
|
The administrator has disabled public write access. |
|
|
|
cheap las vegas show tickets Terri Schiavo's Brother Says the Press Is Still Lying About His Sister
|
|
|
<snip Regardless of what you have read, it is a simple fact of anatomy and physiology that the heart and kidneys can function perfectly well without the CNS. Odd that much of what I have read about this came from varying levels of BLS (Basic Life Support) training and disagrees with you. Odder still is that the ALS people who tought teh course were taugh the same thing in greater detail. Where did they go wrong and why don't you tell them. To say that your organs do not rely, to one extent or another depending on the organ under discussion, on input from the CNS and the brain is ludicrous. How about if you do an Internet search, and find for me a reliable source that says that the CNS is necessary for Your assertion was that a heart or a kidney functions perfectly well without a central nervous system, the burden of proof for that claim is yours. I already know the answer, and I know you are full of shit. Direct nerve function set aside, there are several biochemicals (hormones) that are generated that help keep the kidney's functioning and healthy, many of which are produced in either higher or lower quantities by direction of the CNS. Now, either you can prove your claim, or you can't. YOU are the one who, without any medical training, is claiming that the kidney needs the CNS. At what point did you come to think I have no medical training? US Navy Corpsman are usually trained to do that job, even if that training was in 1962. Where did you learn that? Were you born with that knowledge? All I'm asking is the source of your info. Again, you made the claim that the heart and the kidneys could function perfectly well without the CNS. That assertion is yours, the burden of proof is yours. There are a gazillion things that the kidneys do *not* depend on for function: You said, and I quote, that the heart and lungs can function perfectly well without a CNS. Can you prove this assertion or not? A simple yes, or no answer is all that is required. If you didn't snip the rest of my quote, I pointed out that nobody is going to list the things the heart and kidneys do NOT depend on. You said, and again I quote, that the heart and kidneys can function perfectly well without a CNS, I know for fact that your statement was false, and you have YET to show any evidence to the contrary.
|
|
|
|
|
|
|
The administrator has disabled public write access. |
|
|
|
cheap las vegas show tickets Terri Schiavo's Brother Says the Press Is Still Lying About His Sister
|
|
|
The government sanctioned killing of Terri Schiavo Good grief, how many times do we have to kick a dead horse? The autopsy was quite plain. Her brain had melted in the time her family kept her body alive . You can't kill someone who'd died a long time ago.
|
|
|
|
|
|
|
The administrator has disabled public write access. |
|
|
|
cheap las vegas show tickets Terri Schiavo's Brother Says the Press Is Still Lying About His Sister
|
|
|
I don't believe you've had a lick of medical training. You seem to be out of touch with reality in other ways, too.
|
|
|
|
|
|
|
The administrator has disabled public write access. |
|
|
|
cheap las vegas show tickets Terri Schiavo's Brother Says the Press Is Still Lying About His Sister
|
|
|
The government sanctioned killing of Terri Schiavo Good grief, how many times do we have to kick a dead horse? The autopsy was quite plain. Her brain had melted in the time her family kept her body alive . You can't kill someone who'd died a long time ago.
|
|
|
|
|
|
|
The administrator has disabled public write access. |
|
|
|
cheap las vegas show tickets Terri Schiavo's Brother Says the Press Is Still Lying About His Sister
|
|
|
The government sanctioned killing of Terri Schiavo Good grief, how many times do we have to kick a dead horse? The autopsy was quite plain. Her brain had melted in the time her family kept her body alive . You can't kill someone who'd died a long time ago.
|
|
|
|
|
|
|
The administrator has disabled public write access. |
|
Favoured: 0
