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Neurology
Neurons And Nerves PDF Print E-mail
Written by dr rend-san   
Thursday, 05 August 2010 20:15

The human body contains a dozen billion nerve cells (neurons) interwoven into what we call the brain and spinal cord. The basic unit of the nervous system is the  neuron, which consists of a cell body and branched extensions, or processes. Dendrites are those processes conducting nerve (electrical) impulses to the cell body, and axons are those processes conducting nerve impulses away from it. Sensory neurons conduct nerve impulses to or toward the central nervous system; motor neurons conduct nerve impulses to the muscles, glands, and organs; and connector neurons conduct impulses from sensory to motor neurons.

Whereas the sensory neuron typically has long dendrites and a short axon, the motor neuron has short dendrit and a long axon; connective neurons generally have short processes. The junction between the terminal endings of the axon of one neuron and the dendrites of another is referred to as a synapse.

 
The Right Steps To Help Epileptic Patients PDF Print E-mail
Written by HC Team   
Wednesday, 28 July 2010 06:50

Epilepsy is a neurological disorder. An epileptic person is someone who is generally prone to recurrent unprovoked seizures, due to extreme and abnormal neuronal brain function. Statistically speaking, there are reportedly about fifty million people in the world with epilepsy. Moreover, almost ninety percent of them have been observed to be from developing countries.

With the modern treatment and medication, epilepsy is something that can usually be controlled with proper medication, but unfortunately there is no cure for this. Sometimes in extreme cases, surgery becomes an option that is looked into. Epilepsy should not be looked upon as a singular disease; in fact it would be wrong to call it a disease – it is more of a culmination of a lot of different symptoms emerging out of abnormal electrical activity inside a person’s brain.

 
Brief Details About Sciatic Nerve PDF Print E-mail
Written by Fallen   
Tuesday, 08 June 2010 18:34

Beyond your awareness, there can be one part in your body that needs to be given serious concern. One example is regarding the sciatic nerve injury. In specific, sciatic nerve is believed to be the longest nerve in your body. Specifically, this nerve is located from the lower spine runs to the buttocks and hips and through down the back of your leg.

It is said that this sciatic nerve is able to give signal of another problem that may appear. Even though this nerve is in your both legs, the symptoms will only occur in one of the legs as well as the conditions that reflect the problem. You may be right that the symptoms occurred can be comforted with the easy way you normally choose, however, if you find it worse you are suggested to meet your doctor or consult the health-care provider to learn if there is any further diagnosis needed.

 
STROKE PDF Print E-mail
Written by HC Team   
Wednesday, 05 May 2010 16:34

The American Stroke Association, you would be pleased to know, is running an awareness campaign, the power to end stroke,  to educate Americans about the significance and symptoms of the stroke, and also to celebrate the lifestyle and culture of America.

A stroke occurs when the flow of blood to the brain is interrupted. When this happens, the brain cells in that area start dying because they are not getting the oxygen and the nutrients that they require in order to function. A stroke is of two major kinds – ischemic stroke (caused by a blood clot that blocks/plugs a blood vessel or artery in the brain) and hemorrhagic stroke (caused a blood vessel in the brain which breaks, and then bleeds).

 
Erectile Dysfunction (Male Impotence) PDF Print E-mail
Written by dr rend-san   
Saturday, 19 December 2009 06:35

Appoximately 15 milion men in America have some degree of erectile dysfunction. Up to eight percent of cases is caused by biologic factors. Psychogenic factors are also important.

Erectile dysfunction is inability to attain or mantain penile erection sufficient for sexual intercourse. In the sacral cord (S2-S4), there are parasympathetic nerves. These nerves participate in erection. The sympathetic nerves arise from cells in T11-T12 levels of the spinal cord through the hypogastric plexus. These nerves are important in ejaculation. The parasympathetic activity release nitric oxide (local tissue mediators) and cGMP that contributing to sustained erection.

Last Updated on Saturday, 19 December 2009 06:47
 
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Hysterical Aphonia

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Hysterical aphonia is a functional disorder. It is not organic laryngeal paralysis. Patient with hysterical aphonia can not adduct the vocal cords when attempting to speak. Psychogenic condition subh  [ ... ]


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