a key fitting in the lock of a door
Since only 1 neurotransmitter fits in the receptor sites, you can say that the receptor sites is the locked door waiting for the neurotransmitter "keys".
Heroin
Neurotransmitter receptor sites on ligand-gated ion pores.
SEROTONIN is a neurotransmitter that inhibits pain by blocking pain causing chemicals out of their receptor sites
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agonists Chemical substances that mimic or enhance the effects of a neurotransmitter on the receptor sites of the next cell, increasing or decreasing the activity of that cell. Drug that enhances the effects of a particular neurotransmitter.
Excitatory neurotransmitter
No, LSD binds to other receptor sites besides those for serotonin, including dopamine and adrenergic receptors. Compared to compounds such as psilocybin, it is less selective for the 5-HT2A receptor.
It binds to specific neurotransmitter sites, and exerts a physiologic effect. In the case of caffeine, it is potentially dependence producing, if utilized on a regular basis in sufficient quantities.
Dopamine is incorrect. Opiate drugs occupy the same receptor sites as endorphins.
Yes.
endorphins