Quote Originally Posted by P.E.N.G.U.I.N.
THC is absorbed into your lungs through the hemoglobin in blood. For this to replace oxygen and carbon dioxide (the usual gas exchange), the THC has to be more attracted to blood than one or both of those two gasses.

Next, the THC is carried through your blood, to your brain, where your cannabinoid receptors are waiting for it.

THC is then used by your cannabinoid system to calm down nerves that are acting strangely(Euphoria), and to make thoughts flow more easily.(Creativity boost)

Hope that helped.
just a little technical shit...

THC (Delta-9 Tetrahydrocannabinol) attaches itself to CB1 receptors in your nervous system, and CB2 receptors in your immune system.

The CB1 receptors control such things as pain threshold, memory, sensory perception, the release of dopamine and much more. these receptors are activated by various cannabinoids (THC, CBD, CBN, etc.) as well as andandimide; a naturally occuring cannabinoid (endocannabinoid) in yor body

I dont know much about CB2 receptors... i need to research.

oh, btw. there is lots of good research on this website... check it out to get a good idea of whats up