Sympathetic Nervous System Cartes | Quizlet

Sympathetic receptor types

adrenergic, alpha one and two, beta one and two

action of alpha 2 adrenergic receptor

lowers NT at presynaptic terminal

action of beta 2 adrenergic receptor

vasodilation, bronchodilation, uterus relaxation, tremor

sympathetic nervous system nickname

fight or flight

which part of the spine do sympathetic neurons branch out from?

lateral horn

what levels of the spinal cord are sympathetic neurons branching from

T1 to L2

the preganglionic and postganglionic neurons synapse in

the paravertebral ganglion

white ramus

B fibers, preganglionic neurons, myelinated

Action of alpha one adrenergic receptor

vasoconstriction, pupil dilation, uterus contraction

action of beta one adrenergic receptor

increases heart rate, releases renin

grey ramus

C fibers, postganglionic neurons, nonmyelinated

prevertebral sympathetic ganglia

ganglia not near spine, spread all over abdomen

sympathetic preganglionic neuron is

short

Nt and receptor in between sympathetic pre and post ganglionic neuron

ACh and nNAChR

NT released into tissue by sympathetic postganglionic neuron

norepinepherine

tissue receptor for sympathetic nervous system

adrenergic

NT and receptor between preganglionic neuron and adrenal medulla in sympathetic

ACh, nNACh

hormone released by adrenal medulla in sympathetic

epinepherine

synthesis of catecholamines

tyrosine->L-DOPA->dopamine->norepinephrine->epinephrine

3 catecholamines

dopamine, norepinephrine, epinephrine

3 things that remove NT

diffusion, uptake, enzymatic breakdown

monoamine oxidase breaks down what and where

NE/E broken down in postganglionic axon

how is norepinephrine taken back up into the cell

Na+ cotransporter carries NE with Na+ gradient

what does catechol-O-methyl transferase break down

E/NE circulating in blood

VMAT

vesicle monoamine transporter, transports NE out of postganglionic axon