Autonomic Pharmacology Flashcards
origin of preganglionic neurons - Sympathetic NS
T/S
origin of preganglionic neurons - parasympathetic NS
Brain stem: CN 3,7,9,10
S2-S4
location of autonomic ganglia - sympathetic NS
vertebral/prevertebral
location of autonomic ganglia - parasympathetic NS
in or near the effector organs
length of the preganglionic axons - Sympathetic NS
short
length of preganglionic axons - parasympathetic NS
long
length of post ganglionic axons - sympathetic NS
long
length of postganglionic axons - parasympathetic NS
short
Effector organs of the sympathetic NS
smooth muscle, cardiac muscle (controls BP at rest), glands (sweat glands)
Effector organ of the parasympathetic NS
smooth muscle, cardiac muscle, glands
neuroeffector junctions of the sympathetic NS
diffuse, not located in one location
neuroeffector junctions of the parasympathetic NS
diffuse, not located in one location
Neurotransmitter and receptor in the ganglion of the sympathetic NS
AcH, nicotinic receptor
neurotransmitter and receptor in the ganglion of the parasympathetic NS
AcH, nicotinic receptor
neurotransmitter in effector organs of the sympathetic NS
Norepinephrine (except sweat)
neurotransmitter in the effector organs of the parasympathetic NS
AcH
what are the receptor types in the effector organs - sympathetic NS
a1,a2,B1, B2
what are the receptor types in the effector organs - parasympathetic NS
M1-M4 (muscarinic)
what is the role of the sympathetic NS
“fight or flight”
- blood flow to heart and skeletal muscles
- brochodilation
- liver releases glucose to provide energy
unique roles of the sympathetic NS / Sympathetic tone
- controls BP at rest (through vasoconstriction)
- sweat glands, medulla, and blood vessels only receive sympathetic fibers
- controls thermoregulary, renin release, and metabolic effects.
role of the parasympathetic NS
“rest and digest”
S: Salvation
L: Lachrymation
U: Urination
D: Defection
what input is AcH on nicotinic receptor
ALWAYS Stimulatory
what do B1 receptors typically do
part of the sympathetic NS and they increase the actions at the heart
what do parasympathetic M receptors do at the heart
decrease the actions at the heart
what are the actions of a1 receptors in the sympathetic nervous system
Constriction of sphincters, skeletal muscle
and dilation of the pupils
what are the actions of the a2 receptors in the sympathetic NS
relaxes the muscles of the GI
what is the role of B1 in the sympathetic NS
increases the action at the heart
what is the role of the B2 receptors in the sympathetic NS
dilate and relax the skin, skeletal muscle (aka bladder) and lungs
what are M2 receptors of the parasympathetic NS found on
the heart
what are M3 receptors of the parasympathetic NS found on
smooth muscle and the detrusor muscle