Opium.
neurotransmitters
kjk
binds to specific receptors on postsynaptic cell membrane
Ritalin (methylphenidate) and methamphetamine are different chemicals whist they are both stimulants Ritalin will never produce the same effects which meth will, the effect will be similar yet much weaker.
the receptors on the postsynaptic membrane
a neurotransmitter
How a neurotransmitter interacts with the receptors determines its effects. They activate receptors to perform specific functions in the body.the type of receptor
The effect of Ritalin depends on how much and how you take it, if you take Ritalin in the way it is supposed to be taken then you will be able to concentrate more and be less distracted, however if abused Ritalin becomes more like speed and the user becomes happier and the work/task he/she has to do becomes more exciting and they become more motivated to do it.
Ritalin has stronger effects yes. Marijuana isn't that bad of a drug other than the risk of lung cancer and obvious effects (feeling fatigue, peranoid, hungry, confused). Neither drug is that bad in moderation.
Not likely. Bruising can be caused by abnormal clotting factors. PT and PTT can be measured and if they are nl then the bruising is probably not related to the Ritalin. It would be highly unlikely for Ritalin to affect the PT or PTT. Actually, Ritalin does cause bruising. This is a rare but serious side effect and you should stop taking the drug immediately and contact your doctor. The PT and PTT may show up normal but once the Ritalin is discontinued, the bruising typically stops.
The neurotransmitters from one neuron have direct effect on the next neuron. They are channels that are used to transmit messages in the nerves.