Agonist works with the muscles, and the antagonist is the muscle working against it in a contraction. i.e. Bicep curl, the agonist is the Biceps brachii and the antagonist muscle is the triceps brachii.
The word agonist means "producing an action" - an antagonist opposes that action. In medicine, an agonist binds to a receptor site and causes a response, often imitating the natural body reaction. An antagonist acts against this drug and blocks the response. for examples ramiels small balls and pubic hair
Agonist
Antagonist: lats Agonist: Abdominals
Antagonist
The Buprenorphine opioid is classified as a partial agonist antagonist.
anteriordelts andtriceps
Drugs can act as agonist or antagonist to regulate a process or function of cellular/chemical process.
Agonist - Pectoralis Major, Triceps Brachii Antagonist - Bicep Brachii, Latissimus Dorsi
L-dopa is a precursor that is converted to dopamine in the brain. It is not an agonist or antagonist itself, but once converted to dopamine, it acts as an agonist on dopamine receptors.
Morphine
in the arm: bicep contracts (agonist) triceps relax (antagonist) in the leg: hamstrings contract (agonist) quadriceps relaxes (antagonist) remember the agonist is the muscle "agonising" to do the work - like pulling the joint.
gluteus maximus
antagonist goes against the muscle biceps brachii are antagonistic to the triceps brachi quadriceps are antagonistic to the hamstrings an agonist works with the muscle lifting a glass of water brachialis works with the biceps