BRAIN
SPINAL CORD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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3
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4
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5
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None of the above
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Detailed explanation-1: -There are two major groups of nerve plexuses : the spinal plexus and the autonomic plexus. There are five distinct plexuses in each.
Detailed explanation-2: -The 5 terminal branches of the brachial plexus are the musculocutaneous, median, ulnar, axillary, and radial nerves.
Detailed explanation-3: -The term plexus refers to a “web” of nerves that is created just lateral to where T12-L5 exit the spinal cord via intervertebral foramina. The plexus exists bilaterally and allows nerves to combine with different levels to create multiple functioning nerves that serve to innervate various structures.
Detailed explanation-4: -The lumbosacral plexus is formed by the anterior rami (i.e., branches) of spinal nerves L4 to L5 and S1 to S4. It is located on the posterolateral wall of the lesser pelvis, adjacent to the lumbar spine. The lumbosacral plexus then embeds itself into the psoas major muscle and later emerges in the pelvis.