Visceral Innervation of the Abdomen Flashcards
what are the 3 distinct pathways of the sympathetic NS
1) to the body wall (ie: hind paws)
2) body cavity cranial to diaphragm
3) body cavity caudal to diaphragm
what are the 3 distinct pathways of the parasympathetic NS
1) head and neck
2) body caudal to the neck: thorax, foregut, midgut
3) hindgut and pelvis
describe pain
damage to visceral structure which follows the sympathetic pathway backward then heads dorsally
describe non pain
sensations such as fullness, bloating and cramping
follows parasympathetic pathway backward
what system is the thoracolumbar system?
sympathetic
what system is the craniosacral system?
parasympathetic
what is the role of the sympathetics in the abdomen?
will inhibit the function of abdominal organs, typically by decreasing blood flow to organs through vasoconstriction
where do thorax sympathetics originate?
T1-T5 –> CP splanchnic nerves attach to C1-T5 paravertebral ganglia
what do abdomen sympathetics originate?
T5-L4 –> AP splanchnic nerves attach to T5 -Coccygeal level paravertebral ganglia
what levels are the body wall found on?
ALL LEVELS
what happens after synapse for postganglionic fibers?
travel in periarterial plexuses along arterial branches to the target organs
what sympathetics supply the celiac trunk?
celiac ganglion
what sympathetics supply the cranial mesenteric artery?
cranial mesenteric ganglion
what sympathetics supply the caudal mesenteric artery?
caudal mesenteric ganglion
where does hindgut begin?
about 2/3 of the way along the transverse colon