Autonomics IV Flashcards
What is the role of angiotensin?
Vasoconstriction
What is the role of aldosterone?
Decreases excretion of Na
What drive the increase in blood pressure from the kidneys: sympathetic or parasympathetic drive?
Sympathetic
True or false: if you use enough of a drug, selectivity will be lost
True
What are the three classifications of adrenergic receptor agonists?
direct acting
Mixed acting
Indirect acting
What is the MOA of direct acting adrenergic agonists?
Directly agonize the receptor
What are the three ways in which indirect acting adrenergic agonists increase the availability of NE, and epi?
- Release NE from nerves
- Block transport of NE into symp neurons
- Block metabolizing enzymes
What is the MOA of mixed adrenergic agonists?
Indirectly release NE and also directly activate receptors
What receptor does phenylephrine agonize?
Alpha 1
What receptor does clonidine act on?
Alpha 2
What receptors does terbutaline act on?
Beta 2
What receptor does fenoldopam work on?
D1
What receptors does isoproterenol work on?
Beta 1, 2
What are the receptors that dobutamine acts on?
beta 1, beta 2, alpha 1
What are the receptors that epinephrine acts on?
alpha 1, alpha 2, beta 1, beta 2
What are the receptors that NE acts on?
alpha 1, alpha 2, beta 1
What are the receptors that dopamine acts on?
D1, D2, alpha
What are the receptors that ephedrine acts on?
alpha 1, alpha 2, beta 1, beta 2
Why aren’t selective or nonselective adrenergic agonists affected by reserpine or guanethidine?
Directly antagonize
What is the only mixed acting adrenergic drug discussed in class?
Ephedrine
Direct acting or indirect acting: phenylephine. If direct acting, is it selective or non selective?
Direct
Selective
Direct acting or indirect acting: ampmhetamine. If direct acting, is it selective or non selective?
indirect
Direct acting or indirect acting: clonidine. If direct acting, is it selective or non selective?
Direct
selective
Direct acting or indirect acting: terbutaline. If direct acting, is it selective or non selective?
direct
selective
Direct acting or indirect acting: fenolopam. If direct acting, is it selective or non selective?
Direct
Selective
Direct acting or indirect acting: cocaine. If direct acting, is it selective or non selective?
Indirect