1 - Intro to ANS Flashcards
Exogenous cholinergic molecules
Muscarine
Nicotine
Parasymp (superior) pathway
Preganglionic –> Ach (N)
PostGanglionic –> Ach (M)
Target = Heart and vessels
Types of Post ganglionic Sy
(Catergories and the receptors that they target)
Adrenergic –> B/a Receptors
Cholinergic –> either β2 or α1 receptors
PostG Sy Dopaminergic –> D1 receptorss
Post synaptic receptors that act through IP3 –> Ca++ pathway
M1,3,5
Muscarinic receptors that is on both pre and post synaptic side
M4
Presynaptic muscarinic receptor
M2
____ and ____ act within the acetylcholine within the synaptic cleft
AchE / BuChE
_____ and ____ directly activate the SANS by releasing _______
Methylphenidate, Amphetamine
release NE
Enzyme that converts NE to EPI
Phenylethanolamine-N-methyltransferase
Mimic acetylcholine =
Cholinergic = muscarinic agnoists = Parasympathomimetic
Block Ach =
Anticholinergic = muscarinic antagonist = Parasympatholytic
Mimic NE =
Adrenergic = Adrenergic agnonist = Sympathomimetic
Block NE =
Antiadrenergic = adrenergic antagonist = sympatholytic
Cholinergic receptors are either (a)) ______ or (b) _______
Where are (a)?
a = nicotinic
b = muscarinic
Nicotinic can be in:
- Ganglionic
- Skeletal muscle
- Neuronal CNS
Nicotinic receptos are ____ made out of __ subunits
ion channels
5
Structures of the 2 neuronal nicotinic receptors
- 3 β2’s and 2 α4’s
- 5 α7’s
Muscle nicotinic recepor subunits
α1, α1, β1, delta. gamma
Muscarinic receptors are either ___ or ___
Gq coupled or Gi coupled
Gq coupled muscarinic receptors
M1 = CNS
M3 = Ubiquitous
M5 = Cerebral BV
Gi coupled muscarinic receptors
M2 = Heart + bladder, HIppocampus + Cereb. Cort.
M4 = Striatum
Types of adrenergic receptors
α1, α2, β
What are the Gq coupled adrenergic receptors
α1A
α1B
α1D
What are the Gi coupled adrenergic receptors
α2 A/B/C
Gs coupled adrenergic receptors
β1,2,3