When (during the pregnancy) does baby's central nervous system form?

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When is it fully formed?
and
When does baby start to feel things (such as pain)?
you baby will be able to feel pain by 9 weeks gestation.
Week 3 of gestation
The brain, spinal cord, and heart begin to develop
The gastrointestinal tract begins to develop
Weeks 4 to 5
Arm and leg buds become visible
Brain develops into five areas and some cranial nerves are visible
Eyes and ear structures begin to form
Formation of tissue that develops into the vertebra and some other bones
Further development of the heart which now beats at a regular rhythm
Movement of rudimentary blood through the main vessels
Week 6
Arms and legs have grown longer, and foot and hand areas can be distringuished
Hands and feet have fingers and toes (digits), but may still be webbed
Brain continues to form
Lungs begin to form
Week 7
Nipples and hair follicles form
Elbows and toes visible
All essential organs have begun to form
Week 8
Eyelids are more developed
External features of the ear begin to take their final shape
Facial features continue to develop
Intestines rotate


this is from medlineplus website  (+ info)

Do opiates work on the central nervous system?

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yes it depresses it  (+ info)

what is the best treatment you can buy over the counter to help you if you have a bad Central nervous system?

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I am sorry to say that ' bad central nervous system', doesn't really mean anything medically.  (+ info)

how do heroin withdrawal effects the central nervous system?

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Does it stimulate or depresses during withdrawal. and the same question goes for alcohol
An earlier study conducted by Drs. Rolley E. Johnson, Jerome H. Jaffe, and Paul J. Fudala in NIDA's intramural research program in Baltimore also found that buprenorphine was as effective as methadone in maintaining patient participation in an opiate addiction treatment program. In the randomized study, 162 patients were given fixed daily doses of 8 mg of buprenorphine or 60 or 20 mg of methadone over a 17-week treatment period. Treatment retention rates for the three groups of patients were 42 percent, 32 percent, and 20 percent, respectively.

However seems that yet Methadone is the only "well known" treatment at the moment.

This is the web direction for narcotics anonymous:

http://www.na.org/

If the person wants to stop using narcotics, this can help, there is also this other option:

http://nar-anon.org/index.html

Good Luck and take care of yourself!!!  (+ info)

peripheral nervous system and central nervous system?

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I seen my neurologist today and he said he can tell me somethings but i have to wait until my test results from the brain mapping and scan to come back to get more detail. Well i went to see him for complications from meningits and he said that the virus usually only effects the central nervous system but in some people if they have a bad case it can also effect the peripheral nervous system as well as the central nervous system and in my case it has. What does that mean? what does the peripheral nervous system control?
which one effects memory and speech? cuz thats also effected
the central nervous system is your brain and spinal chord, your peripheral nervous system is the nerves that run through the rest of your body, it effects physical sensations, and muscle control.  (+ info)

How does THC affect the central nervous system?

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he objective of this study was to evaluate the effect of the acute administration of marijuana (MJ) on cardiovascular (CV) function and CNS pharmacokinetics (PK) of [15O]water in occasional (O) versus chronic (C) MJ users. Each subject received four injections of [15O]water (one prior and three postsmoking) on two occasions in which they received active or placebo MJ. For each injection, measures of CV function and CNS PK [15O]water were made. Postsmoking, MJ influenced all measured CV and [15O]water PK parameters. C users reported significantly lower "highness" and smaller heart rate (HR) changes, which resulted in reduced rate pressure product (RPP) changes compared to O users, even though {Delta}9-tetrahydrocannabinol levels were higher, whereas changes in blood pressure (BP), arrival time, and [15O]water concentration were not significantly different between the groups. Significant CV changes resulted in changes in the whole-body distribution of cardiac output rather than changes in cerebral blood flow. Chronic MJ use produces tolerance to the HR increases induced by acute MJ smoking compared to changes observed in occasional users, without changing the effects on BP and [15O]water PK.  (+ info)

what is a drug that increases the action of the central nervous system?

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ironically ritalin, which is used for ADHD, is a CNS stimulant.  (+ info)

what fluid is usually drawn from central nervous system?

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cerebral spinal fluid  (+ info)

drugs prescribed to simulate the central nervous system are called what?

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There are NO DRUGS that can possibly simulate the central nervous system! The central nervous system is literally our "backbone" for how we sense feeling the texture of things, whether something feels good or bad to the touch or if we feel something internally that causes pain or pleasure. No drug could EVER simulate the CNS. Are you sure you spelled everything in your question correctly?  (+ info)

The effects of depressants on a person's central nervous system?

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VOTE FOR THE FIRST ANSWER!



Central nervous system depressants slow down the operation of the brain. They first affect those areas of the brain that control a person’s conscious, voluntary actions. As dosage increases, depressants begin to affect the parts of the brain controlling the body’s automatic, unconscious processes, such as heartbeat and respiration.

Alcohol is the most familiar, and most widely abused depressant. With some exceptions, all depressants affect people in much the same way as does alcohol.

Most depressant users ingest these drugs orally. However, a few abusers will inject their drugs intravenously. The injection paraphernalia used by barbiturate abusers are similar to those used by heroin addicts, although a wider gauge hypodermic needle is used, because the barbiturate solution is thicker than the heroin solution. The injection sites on the skin of a barbiturate abuser exhibit large swellings, and may develop ulceration’s resembling cigarette burns.

The affects of depressants are once again compared to those of alcohol - reduced social inhibitions, impaired ability to divide attention, slow reflexes, impaired judgment and concentration, impaired vision and coordination, slurred, mumbled or incoherent speech, a wide variety of emotional effects, such as euphoria, depression, suicidal tendencies, laughing or crying for no apparent reason, etc.

Depressants vary in the amount of time it takes the user to feel the effects and also the amount of time the effects are felt. Some depressants act very quickly, and begin to affect their user within seconds. Others act more slowly, sometimes taking one-half hour or more to begin to exert an influence. The quick-acting depressants also tend to be relatively short acting: in some cases their effects wear off in a matter of minutes. The slow-acting depressants, on the other hand, tend to produce longer-acting effects.

Overdoses of depressants produce effects that are the same as alcohol overdoses. The person becomes extremely drowsy and passes out. Their heartbeat slows and respiration will become shallow. Their skin may feel cold and clammy, and death may result from respiratory failure.  (+ info)

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