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lumbosacral Plexus

Lab quiz 8 will be on the spine, the PNS and the ANS. There will be some overlap on the models. Below is a picture of the lumbar region of the body well as the lower limbs. Identify the structures given. I went really, really, easy on the number of structures. WHen I have tried this model as a detailed model, students have strugled. Therefore, there is only 1 "femoral" nerve and 1 "fibular" nerve when in reality these are different named branches. For the brachial plexus, you may also want to see the lumbar spine model for where the 2 plexuses come off of the spine. Also be sure to see the brachial plexus page as well.

Word Bank

  • Cauda Equina
  • Conus Medullaris
  • Femoral Nerve, random branch
  • Fibular Nerve, unrelated branches
  • Lumbar Plexus
  • Obturator Nerve
  • Sacral Plexus
  • Sciatic Nerve
  • Tibial Nerve
 		Lumbar and Sacral Plexuses

Questions

Be creative. While there are correct answers, I'd rather read creative answers.
  1. Why is the left thumb, his/her left, bigger than the right. It really is. Now you can't unsee it.
  2. Why are his/her lower legs lighter in color than the rest of the model.
Lumbar Plexus Sacral Plexus Obturator Nerve Sciatic Nerve Femoral Nerve Fibular Nerve Tibial Nerve Conus Medullaris Cauda Equina Ulnar Nerve Radial Nerve Phrenic Nerve (Cervical Plexus) Intercostal nerves