antagonist drugs are drugs that block transmitters in the brain that cause illnesses. Hope this helped!
Depending on the hallucinogen, it may be either an agonist or an antagonist at certain receptors. Classic psychedelics such as LSD and psilocybin are 5-HT2A receptor agonists, whereas dissociatives (PCP, DXM, ketamine, etc.) are NMDA receptor antagonists. Deliriants, such as atropine and scopolamine, are muscarinic antagonists.
We mostly talk about agonists and antagonists with regards to cellular receptors. An agonist binds to a receptor and activates it, an antagonist binds to the receptor, but DOES NOT activate it, and prevents it from being activated.
Any time you are doing an exercise where you are pushing a secondary mover will be be the tricep. An antagonist when doing a pushing exercise will always be the bicep.
The agonists are the muscles that help you to do this exercise. The antagonists are the muscles that bring you back to a regular position instead of being stuck.
The SSRI class is neither antagonist nor agonist. They are re-uptake inhibitors. To the extent of my knowledge (I am NOT a doctor), a serotonin: agonist enhances production of sertonin at the source neuron, antagonists blocks binding of serotonin to the target neuron effectively blinding it, re-uptake inhibitors block the destruction of serotonin, effectively letting it act for longer.
Agonist
Anti-psychotic
The Agonist was created in 2004.
adrenalin is an agonist
The Antagonists was created in 1971.
The Agonist muscle. In contrast, the muscle group that has passive action(the muscle being stretched) is called the antagonis muscle. For example, when doing a bicep curl. Your biceps are the agonists and your triceps would be the antagonists.
Agonist is muscarine and antagonist is atropine.