Posted by lae2 on September 14, 2011 at 22:15:14:
In Reply to: Re: Questions for the Pelvic Nerves and Vessels posted by lae2 on September 14, 2011 at 21:49:26:
: : : The hypogastric nerves contain both preganglionic and postganglionic sympathetic nerves. (this is true)
: True. Fibers derived from sacral splanchnic nerves synapse in microganglia of the inferior hypogastric plexus.
In this case, I meant to refer to lumbar splanchnic nerves. Not all of the fibers derived from the lumbar splanchnic nerves synapse at the inferior mesenteric ganglia. Fibers derived from lumbar splanchnic nerves may descend into the pelvis by was of the hypogastric nerves before synapsing in unnamed microglanglia of the inferior hypogastric plexuses. Further, postganlionic fibers from the celiac, superior mesenteric, aorticorenal, and inferior mesenteric ganglia all contribute to the aortic plexus that, in tern, contributes to the superior/inferior hypogastric plexuses and to the common/internal iliac plexuses.
The nuances highlighted in this series of true/false questions may go beyond the expectations for the second examination. But as we go forward in the course, nuances become more integrated into our knowledge.