How many coccygeal spinal nerves are there?

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Study for the Neurophysiology Test with flashcards and multiple choice questions, each with hints and explanations. Enhance your understanding of cell types, signals, and sensory pathways. Ace your exam!

Multiple Choice

How many coccygeal spinal nerves are there?

Explanation:
The number being tested is how many nerve pairs arise from the coccygeal region. In humans there is a single coccygeal spinal nerve pair, Co1. This is part of the typical pattern of spinal nerves by region: cervical nerves (eight pairs) plus thoracic, lumbar, and sacral pairs, and then one coccygeal pair. The coccygeal nerve comes from the coccygeal segment and exits near the coccyx, even though the spinal cord ends higher and the lower nerve roots form the cauda equina. That’s why the count is one coccygeal nerve.

The number being tested is how many nerve pairs arise from the coccygeal region. In humans there is a single coccygeal spinal nerve pair, Co1. This is part of the typical pattern of spinal nerves by region: cervical nerves (eight pairs) plus thoracic, lumbar, and sacral pairs, and then one coccygeal pair. The coccygeal nerve comes from the coccygeal segment and exits near the coccyx, even though the spinal cord ends higher and the lower nerve roots form the cauda equina. That’s why the count is one coccygeal nerve.

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