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38 Cards in this Set
- Front
- Back
Location of greater thoracic splanchnic preganglionic cell bodies?
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Location of greater throacic splanchnic preganglionic cell bodies is T5-T9
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Location of lesser thoracic splanchnic preganglionic cell bodies?
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Location of lesser throacic splanchnic preganglionic cell bodies is T10-T11
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Location of least thoracic splanchnic preganglionic cell bodies?
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Location of least thoracic splanchnic preganglionic cell bodies is T12
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Location of lumbar splanchnic preganglionic cell bodies?
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Location of lumbar splanchnic preganglionic cell bodies is L1-L2
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What gland is innervated by greater, lesser, and least splanchnic nerves?
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Suprarenal gland (medulla) is innervated by greater, lesser, and least splanchnic nerves
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Where do preganglionic greater thoracic splanchnic fibers synapse?
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Preganglionic greater thoracic splanchnic fibers synapse on celiac ganglion
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Where do preganglionic lesser thoracic splanchnic fibers synapse?
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Preganglionic lesser thoracic splanchnic fibers synapse on superior mesenteric ganglion
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Where do the preganglionic least thoracic splanchnic fibers synapse?
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Preganglionic least thoracic splanchnic fibers synapse on minute ganglia of the renal plexus (aorticorenal ganglia) and adrenal medulla
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Where do preganglionic lumbar splanchnic fibers synapse?
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Preganglionic lumbar splanchnic fibers synapse on inferior mesenteric ganglion
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What do postganglionic fibers of greater thoracic splanchnic supply?
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Postganglionic fibers of greater thoracic splanchnic supply vascular smooth muscles of the vessels and viscera that the celiac trunk supplies (i.e. foregut)
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What do postganglionic fibers of lesser thoracic splanchnic supply?
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Postganglionic fibers of lesser thoracic splanchnic supply the vascular smooth muscle of the vessels supplied by the superior mesenteric artery (i.e. superior mesenteric plexus to the midgut)
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What do postganglionic fibers of least thoracic splanchnic supply?
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Postganglionic fibers of least thoracic splanchnic supply the aorticorenal ganglia and adrenal medulla, kidneys, gonads
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What do postganglionic fibers of lumbar splanchnic supply?
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Postganglionic fibers of lumbar splanchnic form the intermesenteric plexus to supply the hindgut
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What do sacral splanchnics supply?
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Sacral splanchnics supply the hindgut
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With what structure does the greater thoracic postganglionic fibers travel?
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Greater thoracic postganglionic fibers travel with the celiac trunk (as perivascular plexus)
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With what structure does the lesser thoracic postganglionic fibers travel?
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Lesser thoracic postganglionic fibers travel with the superior mesenteric artery
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With what structure does the least thoracic postganglionic fibers travel?
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Least thoracic postganglionic fibers travel with the renal artery
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With what structure does the lumbar splanchnic postganglionic fibers travel?
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Lumbar splanchnic postganglionic fibers travel with the inferior mesenteric artery
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Anterior vagal trunk is a continuation of what?
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Anterior vagal trunk is a continuation of the left vagus nerve
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Posterior vagal trunk is a continuation of what?
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Posterior vagal trunk is a continuation of the right vagus nerve
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Where does the preganglionic vagus fibers synapse?
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Preganglionic vagus fibers synapse within the wall of the organ
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How does the synapse of preganglionic parasympathetic fibers (vagus, pelvic splanchnic) differ from preganglionic sympathetic fibers?
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Preganglionic fibers synapse within the wall of the organ (no postganglionic distribution of fibers, already in the target organ), unlike sympathetic fibers which have to distribute postganglionic fibers
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What does the vagus supply in the abdomen?
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The vagus supplies the foregut, midgut, and part of the hindgut
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Where are the preganglionic cell bodies of pelvic splanchnic nerves?
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Preganglionic cell bodies of pelvic splanchnic nerves are located at S2-S4
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Where do pelvic splanchnic nerves distribute their preganglionic fibers?
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Preganglionic pelvic splanchnic fibers travel to the rectum, sigmoid colon, descending colon, and distal 1/3 of the transverse colon (hindgut)
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Where do preganglionic pelvic splanchnic nerves synapse?
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Preganglionic pelvic splanchnic nerves synapse in ganglia in the wall of the gut or in the pelvic viscera (*parasympathetic* synapse on or near the organ)
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What comprises the parasympathetic portion of the celiac plexus?
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Posterior vagal trunk comprises the parasympathetic portion of the celiac plexus (*but do not synapse, just passing thru)
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What comprises the sympathetic portion of the celiac plexus?
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The greater and lesser splanchnic nerves comprise the sympathetic portion of the celiac plexus (*these do synapse here)
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Where is the intermesenteric plexus located?
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The intermesenteric plexus is between the superior and inferior mesenteric arteries
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What does the intermesenteric plexus give rise to?
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The intermesenteric plexus gives rise to renal, testicular/ovarian, and ureteric plexuses
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What is continuous with the intermesenteric and inferior mesenteric plexus?
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The superior hypogastric plexus is continuous with the intermesenteric and inferior mesenteric plexus; it lies anterior to the inferior portion of the aorta near its bifurcation
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What joins the superior hypogastric plexus and by what means?
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The inferior hypogastric plexus joins the superior hypogastric plexus by the right and left hypogastric nerves
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What is distributed with the arterial supply?
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The perivascular plexuses are distributed with the arterial supply (celiac trunk, superior mesenteric artery, renal artery, and inferior mesenteric artery)
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What gives rise to the lumbar splanchnic nerves?
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The abdominal part of the sympathetic trunk gives rise to the lumbar splanchnic nerves
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How many lumbar sympathetic ganglia are there coming off the abdominal sympathetic trunk?
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The abdominal sympathetic trunks are composed of 4 lumbar sympathetic ganglia that are connected to each other
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What do the abdominal sympathetic trunks receive and then send?
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Abdominal sympathetic trunks receive white rami communicans from ventral primary rami L1-L2 and send grey rami communicans back to these levels
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Where do lumbar splanchnic nerves travel?
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Lumbar splanchnic nerves pass to the intermesenteric, inferior mesenteric, and superior hypogastric plexuses
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By what general path do parasympathetics travel in the abdomen to get to the hindgut?
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Parasympathetic fibers travel along the wall of the colon and rectum to supply the hindgut
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