NERVOUS SYSTEM SPECIAL SENSE
SPINALCORD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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posterior ramus
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meningeal branch
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anterior ramus
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None of the above
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Detailed explanation-1: -The dorsolumbar nerve, which joins the anterior ramus of spinal nerve L1, contributes to the creation of the lumbar plexus via the anterior ramus of spinal nerve T12.
Detailed explanation-2: -The lumbar plexus originates from the anterior rami of spinal nerves L1-L4 and is formed largely within the posterior aspect of the psoas major muscle. The anterior ramus of spinal nerve T12 contributes to the formation of the lumbar plexus via the dorsolumbar nerve, which joins the anterior ramus of spinal nerve L1.
Detailed explanation-3: -From superior to inferior, the major nerves that branch off the lumbar plexus include the iliohypogastric nerve, ilioinguinal nerve, genitofemoral nerve, lateral femoral cutaneous nerve, obturator nerve, and femoral nerve, as well as the lumbosacral trunk.
Detailed explanation-4: -Spinal Plexuses The cervical plexus is formed by the ventral rami of the upper four cervical nerves and the upper part of fifth cervical ventral ramus.