Autonomic Drugs I Flashcards
(41 cards)
adrenal medulla and sweat glands
sympathetic
-but innervated by cholinergic
botulinum
prevent release of ACh at cholinergic terminals
nAChR mechanism
ligand gated
-Na/K channels
Nn - autonomic ganglia
Nm - at NMJ
NMJ receptor
nAChR
adrenal medulla receptor
nAChR
sweat gland receptor
mAChR - postganglionic - sympathetic
parasympathetic receptors
nAChR - preganglionic
mAChR - postganglionic
sympathetic to renal vasc smooth muscle receptors
pregang - nAChR
postgang - D1
mAChR mechanism
GPCRs - act through 2nd messengers
5 subtypes - M1-M5
sympathetic receptors
pregang - nAChR
postgang - alpha/beta adrenergic - NE
all preganglionic
nAChR
alpha1 receptor type
GPCR q
alpha1 receptor function
vasc smooth m contraction
pupil dilator m contraction (mydriasis)
increased intestinal and bladder sphincter contraction
alpha2 receptor type
GPCR i
alpha2 receptor function
decreased sympathetic outflow decreased insulin release decreased lipolysis increased platelet aggregation decreased aqueous humor production
beta1 receptor type
GPCR s
beta1 receptor function
increased HR
increased contractility
increased renin release
increased lipolysis
beta2 receptor type
GPCR s
beta2 receptor function
vasodilation bronchodilation increased lipolysis increased insulin release decreased uterine tone (tocolysis) ciliary muscle relaxation increased aqueous humor production
M1 receptor type
GPCR q
M1 receptor function
CNS, enteric nervous system
M2 receptor type
GPCR i
M2 receptor function
decreased heart rate
contraction of atria
M3 receptor type
GPCR q