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ANS&Anastomose EXAM3

Gross Anatomy - ANA & Anastomoses, Exam 3

QuestionAnswer
Sympathetic trunks continue inferiorly into sacral region (origin L1-L2)
ganglia provide sympathetic fibers
sympathetic fibers travel with branches of sacral plexus to lower limb
some visceral fibers leave chain & contribute to inferior mesenteric plexus (sacral splanchnics)
All parasympathetics in pelvic region from S2-S4
fibers make up pelvic splanchnic nn.
visceral fibers not to be confused with nn. of sacral plexus originating from these levels
internal iliac a. has these arteries off it umbilical, sup. vesical, obturator, inf. vesical (male), uterine & vaginal (female), middle rectal, int. pudendal, inf. gluteal, sup. gluteal, iliolumbar, lat. sacral
iliolumbar anastomose with lumbar (from aorta)
lateral sacral anastome with middle sacral (from aorta)
inferior rectal (from internal pudenal) anastomose with superior rectal (from IMA)
uterine anastomose with ovarian (from aorta)
Created by: JYarger