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Bio 203 NS

autonomic ns

QuestionAnswer
smooth muscle, heart, glands innervated by autonomic ns
all autonomic neurons deliver this ntran at ganglion ACh @ nicotinic receptors
Preganglionic neurons mylenatated? yes
Post ganglionic neurons myleniated? no
ANS target ntrans are ACh or NE
Psymp pathway preganglionic always ACh/Nicotinic with ACh/Muscarinic? Yes
rest/digest & SLUDD = psymp salivation, lacrimation, urination, digestion, defecation,
3,7,9 and 10 CNs of psymp? yes
Cranial/sacral innervate which ns? psymp
sympathetic pathway always secretes ACh/Nicotiinic preganglionic? yes
sympathetic postganglionic neuron almost always delivers NE to Adrenergic receptors? yes
exception to the rule - sympathetic stimulation of sweat glands? yes
at sweat glands, SYMPATHETIC post gang delivers ACh to Muscarinic receptors yes
sympathetic NS = thoracolumbar? yes - T1 - L2
innervation can either excite or inhibit their targets? yes
types of cholinergic receptors nicotinic, muscarinic
types of adrenergic receptors alpha, beta
where are nicotinic receptors found all autonomic ganglia, all post ganglionic autonomic neurons
where are cholinergic recetors found in somatic ns neuromuscular jxn
muscarinic receptors found on psymp targets and symp sweat glands
where are alpha-1s foundr smooth muscle non-exercising bvessels, sphincters of urinary & GI, radial muscle of iris, urinary sphincters
where are alpha-2s found pancreatic Islets of Langerhans to liberate glycogen to glucose (in addition to presyn terminal)
Where are Beta-1s found SA node, myocardial cells, sm musc of non-exercising capillary beds
Where are Beta-2s found sm muscle of exercising bvessels, sm musc of trachea, bronchi
why might a patient take a beta-1 antagonist blocker *pt has high bp or recovering from MI. *slow HR at rest, lower BP, help slow arrhythmia, migraine HA.
why might a pt take a beta-2 agonist promoter *bronchodilation in asthma pt
why might a patient take an alpha-1 receptor antagonist *vadodilation of non-essential to lower BP (antihypertensive) *urinary sphincter no longer constricted (relaxes) make urination easier for prostatic hypertrophy
why might a pt take a muscarinic receptor antagonist blocking psymp and sweat glands. will decrease sludd. atropine, anticholinergic (antimuscarinic), parasympatholytic,
why do we give epinephrine in emergency situations *epi binds with adrenergic receptors non-selectively (anaphylaxic shock, heart has stopped
a pt has a rapid heart rate. the doc does carotid massage. this stimulates vagus nerve. why does this help the patient?
Created by: lorrelaws
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