BRAIN
SPINAL CORD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cervical
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thoracic
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lumbar
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None of the above
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Detailed explanation-1: -Spinal nerves of the thoracic region, T2 through T11, are not part of the plexuses but rather emerge and give rise to the intercostal nerves found between the ribs, which articulate with the vertebrae surrounding the spinal nerve. Figure 13.3.
Detailed explanation-2: -The Brachial plexus is formed by the ventral rami of C5-C8-T1 spinal nerves, and lower and upper halves of C4 and T2 spinal nerves.
Detailed explanation-3: -The answer is (c); choroid plexus. The choroid plexus is a network of cells found in the central nervous system that aids in the production of cerebrospinal fluid (commonly known as CSF). The cervical, brachial, lumbar, and sacral plexuses are all networks of mixed spinal nerves.
Detailed explanation-4: -9.25 Thoracic Nerves These nerves do not form plexuses; they distribute cutaneous branches to the thoracic dermatomes and send other sensory fibers to deeper muscular structures, vessels, periosteum, parietal pleura, the peritoneum, and breast tissue.