Dopamine: Flashcards
1
Q
what is dopamine
A
Dopamine receptor agonist
2
Q
role of dopamine
A
-a precursor to norepinephrine in noradrenergic nerves -also a neurotransmitter in the central nervous system.
3
Q
which receptors does dopamine act as an agonist to?
A
to the five dopamine receptor subtypes (D1, D2, D3, D4, D5). and beta-adrenoceptors
4
Q
how does dopamine cause an increased heart rate and cardiac contractility?
A
indirectly by causing release of norepinephrine from storage sites in sympathetic nerve endings producing positive chronotropic and inotropic effects on the myocardium
