As offensive coordinator, Arians was part of Steeler teams that won three AFC North Division titles, two AFC Championships and Super Bowl XLIII. In 2009, the Steelers' offense became the first in team history to have a 4,000-yard passer, two 1,000-yard receivers and a 1,000-yard rusher in the same season.
From Wikipedia, the free encyclopedia. A dopamine antagonist is a drug which blocks dopamine receptors by receptor antagonism. There are five known types of dopamine receptors in the human body; they are found in the brain, peripheral nervous system, blood vessels, gastrointestinal tract and the kidney.rom Wikipedia, the free encyclopedia. A dopamine antagonist is a drug which blocks dopamine receptors by receptor antagonism. There are five known types of dopamine receptors in the human body; they are found in the brain, peripheral nervous system, blood vessels, gastrointestinal tract and the kidney.
DRUG CLASS AND MECHANISM: Dopamine is a chemical produced by our body and it has several functions. Dopamine works as a neurotransmitter (chemical that nerves use to communicate) in the brain.It is also converted to norepinephrine, another neurotransmitter. Dopamine increases heart rate and heart muscle contractions.It also causes increases in blood pressure. The FDA approved dopamine in February 1974.opamine works as a neurotransmitter (chemical that nerves use to communicate) in the brain. It is also converted to norepinephrine, another neurotransmitter. Dopamine increases heart rate and heart muscle contractions. It also causes increases in blood pressure. The FDA approved dopamine in February 1974.