Autonomic/cardio general info Flashcards
Just parasympathetic
Ciliary muscle, sublingual gland
Just sympathetic
Ventricle, sweat glands, pilomotor fibers, adrenal gland, blood vessels
Synergistic ANS
Pupillary diameter, male sex organs
Nicotinic cholinergic receptors
Neuromuscular and preganglionic
Muscarinic adrenergic
Postganglionic parasympathetic and sweat glands
NE released from…
Postganglionic sympathetic, adrenal medulla, some CNS neurons
Rate limiting step of ACh formation
Choline transport via Na dependent choline transporter
Rate limiting step of catecholamine synthesis
Tyrosine hydroxylase (tyrosine to DOPA)
Conversion of Dopamine to NE is done by…
Dopamine-B-hydroxylase
Type of G protein
Alpha 1
Alpha 2
Beta
Alpha 1: Gq
Alpha 2: Gi
Beta: Gs
Alpha sensitivity to catelcholamines
Epi>NE>isoproterenol
Beta sensitivity
Isoproterenol>Epi=NE
Phenyleprine relative affinity
Alpha agonist
A1>A2»»>B
Clonidine relative affinity
Alpha agonist
A2>A1»»>B
NE relative affinity
Mixed agonist
A1=A2 B1»B2
Epinephrine relative affinity
Mixed agonist
Equal for all
Dobutamine relative affinity
Beta agonist
B1>B2»»a
Isoproterenol relative affinity
Beta agonist
Equal for B»»alpha