Sympathetic NS

Cards (25)

  • what type of response is sympathetic NS
    fight or flight
  • where do the nerves of the SNS originate
    T1 - T12
    L1 - L3
  • what nerves travel directly to organs in the SNS
    celiac
    superior mesenteric
    inferior mesenteric
  • in the SNS what size are the preganglionic and ganglionic fibres
    pre = short
    gang = long
  • in the PNS what size are the preganglionic and ganglionic fibres
    pre = long
    gang = short
  • what is the neurotransmitter at ganglions
    acetylcholine
  • what does activating nicotinic receptors release
    adrenaline and noradrenaline
  • what does alpha 1 cause
    increase calcium and IP3
  • what does alpha 2 cause
    decrease in cAMP
    inhibition of adenylyl cyclase
  • what does beta 1 cause
    stimulate adenylyl cyclase
    increase cAMP
  • what does beta 2 cause
    stimulate adenylyl cyclase
    increase cAMP
  • what does nicotinic receptors cause
    opening of sodium and potassium channels
  • what does muscarinicreceptors cause
    increase calcium release
    decreased adenylyl cyclase
    decreased cAMP
  • is alpha 1 receptor stimulatory or inhibitory
    stimulatory
  • is alpha 2 receptor stimulatory or inhibitory
    inhibitory
  • what activates alpha 1
    noradrenaline
  • what activates alpha 2
    noradrenaline
  • is B1 and B2 stimulatory or inhibitory
    stimulatory
  • what do indirect acting adrenoreceptor agonists do
    inhibit reuptake of released transmitter
  • are dilator muscles controlled by sympathetic or para
    sympathetic
  • are contrictor muscles controlled by sympathetic or para
    parasympathetic
  • is bladder filing controlled by sympathetic or para
    sympathetic
  • is bladder emptying controlled by sympathetic or para
    parasympathetic
  • where are nicotinic receptors or cholinoreceptors found
    postganglionic neurons
  • where are muscarinic receptors or cholinoreceptors found
    sweat glands