Sympathetic autonomic ganglia Correct Answer: chain travelling parallel to sp cord w/ short pregang fibers
Parasympathetic autonomic ganglia Correct Answer: ganglia @ organ of innervation w/ long pregang fibers
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Sympathetic autonomic ganglia Correct Answer: chain travelling parallel to sp cord w/ short pregang fibers
Parasympathetic autonomic ganglia Correct Answer: ganglia @ organ of innervation w/ long pregang fibers
Parasympathetic effector receptors Correct Answer: Muscarinic Ach receptors @ heart & exocrine glands
Sympathetic effector receptors Correct Answer: beta-1 adrenergic receptors @ heart; alpha-1 & beta-2 adrenergic receptors @ smooth musc
Sympatho-Adrenal System Correct Answer: outer cortex secretes steroid hormones, medulla secretes epi & NE; pregang sympa neuron w/ cell body in sp cord releases Ach @ synapse to postgang sympa fibers of adrenal medulla --> medulla cells secrete epi/NE into bloodstream --> epi/NE binds alpha & beta adrenergic receptors @ target organs
Sympathetic nerve fibers Correct Answer: - Origin = thor & lumb sp cord
- Fibers = short pregang, long postgang
- Ganglia = located in paravert chain, also neuroendocrine control of adr medulla
- D/c & activ = mass activation
- Systemic effects = rel epi & NE from adr medulla affecting entire organism
- Response = fight-or-flight
- Pregang NT = Ach
- Postgang NT = NE (except @ sw glands & vasodilator fibers of sk musc which use Ach), adr medulla rel epi, Dopamine in some areas
- Pregang receptor = nicotinic cholinergic
- Postgang receptors = alpha & beta adrenergic, D1 dopamine rec on renal & mesenteric vasc
Parasympathetic nerve fibers Correct Answer: - Origin = CNs III, VII, IX, X & sacral sp cord
- Fibers = long pregang, short postgang
-Ganglia = usually in innerv organs
- D/c & Activ = dir activation of specific organs (NO mass activation)
- Systemic effects = no mass activation, mediates sympa NTs via muscarinic cholinergic rec on sympa postgang neurons
- Response = rest & digest
- Pregang NT = Ach
- Postgang NT = Ach
- Pregang Rec = Nicotinic cholinergic
- Postgang Rec = Muscarinic cholinergic
Enteric nervous system Correct Answer: 3rd div ANS incl submucosal, myenteric, subserosal plexuses controlling GI motility & secretion, interacting w/ brain ners by dir innerv & GI peptide rel; sympa innerv inhibits, par
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