Nervous System

I am familair with this one because my wife experienced this just last year but I don't even know how or why it happened. A nervouse breakdown is caused by an intense, continuous amount of stress an individual undergoes. Whatever type of stress it is, it is triggered to the brain as unsurmountable thereby unable to be handled causing a collapse or 'breakdown' in the nervous sytem of the mind. Individuals who have suffered from nervouse breakdowns sometimes appear to be disabled because they behave like those of whom are mentally impaired.

my husband has t2 intense foci in the subcortical white matter in the frontal and parietal reigon these are compatible with foci of chronic ischaemic change the finding is related to small vessel disease his mood swings are getting worse would this disease be a part of mood swings.

i have had 5 years of nerve damage to my side. constant pain when will it be better ANSWER You should go and get assessed by a doctor or a physiotherapist that will be able to tell you how things are done and how they will get better.

Sensory receptors in the dermis include: free nerve endings, pacinian corpuscles, and hair follicle receptors The mechanoreceptors of the skin are the meissner's corpuscles (which respond to light touch), the pacinian corpuscles (deeper in the dermis and respond to pressure), and the merkel's disks (closely related to the merkel's cells located in the epidermis and respond to light touch). The nociceptors are pain receptors that recognize hot, cold, and pain.

Damage to the nervous system can be very long term. It all depends on where the damage occurs. If at the spinal cord, the muscles may not respond. If in the brain, perhaps sight will be lost. Death can occur if the brain is damaged.

If the human kind was created without a nervous system, we would not feel anything. For example, if I poked you and you didnt have a nervous system, yiu wouldn't feel it. I could slap your back and you wouldn't feel it.

Don't worry I won't slap you.

I don't even know you. lol

Glad I could help :)

The most immediate effect would be an increase in heart rate. In addition, regulation of heart rate, contractile state, and conduction of electrical impulses through the heart would be impaired.

The reason for the observed effects are that the vagus nerve carries important information to the heart from a part of the central nervous system called the parasympathetic nervous system. The parasympathetic nervous system is often considered the "rest and digest" system. It decreases heart rate, decreases how strongly the heart contracts with each beat, and decreases the rate at which electrical impulses are conducted through the heart. This is in contrast to the effects of the sympathetic nervous system on the heart; the sympathetic nervous system raises heart rate, force of contraction, and rate of electrical conduction in the heart.

A normal heart does not require information from the parasympathetic and sympathetic nervous systems in order to beat. The heart has an intrinsic pacemaker that allows it to generate heart beats on its own. The heart's pacemaker generates a pace at a rate of about 100 cycles per second, which means that if the heart was to take matters into its own hands (ie, have no innervation), then it would beat at about 100 beats per minute (bpm).

If that's the case, then why do normal adult hearts beat around 70 beats per minute and not 100?

As was hinted at above, normal hearts are innervated by the parasympathetic and sympathetic nervous systems. And both act on the heart at the same time. While you might think that the systems would cancel each other out, it turns out that the heart receives more sympathetic stimulation than parasympathetic stimulation at rest. The result is that the heart is effectively told to reduce the heart rate from the normal 100 bpm to something closer to 70 bpm.

Thus if you take a normal heart at rest that's innervated by both sympathetic and parasympathetic systems, and then sever the vagus nerve, you lose the parasympathetic input to the heart, while leaving the sympathetic input intact. The result is that the resting heart rate increases, to something closer to 100 bpm. ________________________________________________________________________ Cutting the vagus nerve would increase the heart rate. At REST there is more Parasympathetic input to the heart because it slows the heart rate. However during activity there is more sympathetic imput than parasympathetic imput. If all nerves were cut from the heart it would continue to beat in a Ryhmic way because of the electrical system, as demonstrated in heart transplants.

Depressant Drugs:

Alcohol, Benzodiazepines, Barbiturates and other central nervous system depressant drugs act primarily on a neurotransmitter substance known as GABA (Gamma Aminobutyric Acid). GABA is an inhibitory neurotransmitter that makes other neurons less likely to activate. The depressant drugs are GABA agonists, acting to help GABA reduce neuronal activation more efficiently than it usually would. Alcohol also inhibits (acts as an antagonist against) another excitatory neurotransmitter (Glutamate), making it harder for Glutamate to get the nervous system excited.

Stimulant Drugs

Amphetamines have their primary effects on the neurotransmitter Dopamine. Amphetamines both induce the terminal button of Dopamine-producing neurons to let more Dopamine out than normal, and also keep that Dopamine out in the synapse longer than it normally would be allowed to stay. Amphetamine also acts agonistically on receptors for a different neurotransmitter, Norepinephrine, by competing with Norepinephrine for post-synaptic receptors and turning those post-synaptic receptors on.

Cocaine has its major effect by blocking the re-uptake of the neurotransmitters Dopamine and Serotonin.

Opioid Drugs:

Opioid drugs bind to special endorphin receptors in the brain (the 'mu', 'kappa', 'sigma' 'delta' and 'gamma' receptors) that have to do with pain. When these receptors are occupied and activated, the perception of pain lessens.

Drug treatments for opioid addictions sometimes include the administration of Naltrexone, which is an opioid antagonist. Naltrexone competes with the opioids for their receptor sites, but is not itself capable of activating those receptor sites. An opioid addict on Naltrexone is thus rendered more or less incapable of getting high from their opioid drug of choice; they may take an opioid, but it will be blocked from the opioid receptors by the Naltrexone, and will not have its effect.

Cannabinoids:

Marijuana has a complex set of effects. It acts on the neurotransmitters Serotonin, Dopamine and Acetylcholine. It also binds to a receptor for a recently discovered neurotransmitter known as Anadamide.

Hallucinogens:

LSD is known to antagonize Serotonin by blocking its release.

There are several things to do that might help:

* Frequent bathing * Frequent changes of clothing * Avoid foods that cause body odors * Use deodorant, but to prevent sweating use the kind that says, Antiperspirant. * Keep your clothes loose fitted around the armpit as circulation of air keeps the armpit from having an odor * Dress in natural fibers

If the problem is really bad, a doctor may be of some assistance. There are products made specifically for this problem, some of which can be found in many drug, discount and health food stores. One, in particular, is a salt/mineral salt product. Salt has some natural anti-bacterial properties, so this may help eliminate the problem, since quite often, it is bacteria that causes the odor. This can also help with sweaty and/or smelly feet.

resting and digesting

Nerve impulses are far faster then responses to hormones. Nerve impulses involve the depolarization of neural membranes, which is as simple as the movement of sodium and potassium ions through channels. This is very very fast. The time this takes to happen is the time from when something touches you, such as your finger touching a keyboard to the time it takes you to feel that your finger is touching the keyboard. Another example of the speed of a nerve impulse is if you have ever accidentally touched a hot element on the stove, or a hot bowl and how fast your hand recoils. A nerve impulse must travel to the brain and back down again to tell your arm muscles to contract and move from the heat. This impulse is followed by a very brief period of non responsiveness but then the membrane repolarizes and the system can fire again. This whole process takes such a small time one could not measure it without special instruments

A hormonal response is slower and longer lasting. A signal must be sensed for a hormonal response, this could be anything from high or low sugar in the blood stream, to stress. Upon receiving this signal the hormone must be made. This is a time consuming event, as must hormones are proteins they must be transcribed and translated from DNA and appropriately processed in the hormone molecule. From here the hormone is transported into the bloodstream where it is distributed throughout, even though it may only act on certain areas, this is another time consuming process. For reference it takes the heart about 1 minute to completely circulate all the blood in the system, much longer then the fractions of seconds needed for nerve impulses. Once the hormones reaches its proper tissue it has its effect, which in most cases is a long and complex pathway, which can be turned on for a long period of time given that low concentrations of hormone can activate the pathway. Also another signal is also needed to counteract the effect of the pathway and turn it off. An example of this is adrenaline in a stressful situation, think back to a time where you nearly crashed your car, or went on a crazy ride at an amusement park, or something like that, the feeling of being on high afterwards is due to release of adrenaline also called epinephrine. The feeling does not occur instantly, but is still relatively fast and the feeling lasts well after the situation is over. Insulin in the blood stream is another hormonal response. When glucose is in high concentration in the blood insulin is secreted and travels through the bloodstream, it causes cells to have more glucose transporter at their surface so the high amount of glucose in the blood can move into cells and be used or stored. This is also a seemingly needlessly complex pathway involving at last 8 different reactions involving phosphorylation of proteins and lipid molecules, which certainly takes longer then the motion of ions through a channel.

It has been proposed that in patients with anxiety or mood disorders there are alterations in the functions of central neurotransmitters, including GABA, serotonin and noradrenaline.

Research in this area suggests that the primary dysfunction in anxiety disorders is a down-regulation of the brain inhibitory GABA and serotonin systems and an up-regulation of the brain pro-anxiety noradrenaline system, or some degree of involvement from each

A stomach ailment can be any type of medical condition of the stomach or digestive system, including indigestion, GERD, peptic ulcers, diverticulitis, and lactose intolerance. Some stomach ailments may be more serious problems like stomach cancer.

It goes through your neurons up to your brain

The Autonomic Nervous system is responsible for fight or flight.

Parasympathetic is the stimulator and the sympathetic is the one that calms. Many drugs mimic this system

Hope this helps

A RN in NJ

Source:

Taught Anatomy and Physiology to nursing students for over 2 years

my head

The central nervous system comprises the brain and the spinal cord. Both of these consist of nerve cells, called neurons, and supportive cells (e.g., astrocytes or Schwann cells).

1.ensure optimal nutritional support for your nervous system..

2.exercise your nervous system o a daily basis

A nerve is a bundle of individual neurons. There are approximately 100 billion neurons in the human body (about the same number of stars in our Milky Way galaxy), but there are only 214 nerves in the human body.

Facial nerve Glossopharyngeal nerve Vagus nerve

There are 12 cranial nerves, they are as followed;

(I) Olfactory

(II) Optic

(III) Oculomotor

(IV) Trochlear

(V) Trigeminal

(VI) Abducens

(VII) Facial

(VIII) Vestibulocochlear

(IX) Glossopharyngeal

(X) Vagus

(XI) Accessory

(XII) Hypoglossal

Demyelinating diseases such as Multiple Sclerosis, Krabbe's Disease, and Guillain-Barre Syndrome involve degeneration of the myelin sheath. In these conditions, movement is limited to minimal as nerve conduction is reduced due to the loss of efficacy of the myelin.

The afferent nerves or sensory nerves of the peripheral nervous system send messages to your brain.

3 jobs of the nervous system are:

1) activates the endocrine system and either relaxes or stresses the body

2) the brain sends a message to different body parts using the nervous system...the movement and all

3) sends sensation signal (pain,pressure warmth,cold) fromobject to brain

I hope this answered your question!!=)=)