Parasympathetic level for the kidneys.

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Multiple Choice

Parasympathetic level for the kidneys.

Explanation:
Parasympathetic input to the kidneys comes from the vagus nerve (cranial nerve X). The vagus provides parasympathetic fibers to most thoracoabdominal organs, including the kidneys, via the renal plexus. In contrast, the pelvic splanchnic nerves (S2–S4) supply pelvic organs, not the kidneys. The spinal levels listed (T10–L2 or T11–L2) represent sympathetic input to the kidneys, not parasympathetic. So the correct source of parasympathetic innervation for the kidneys is the vagus.

Parasympathetic input to the kidneys comes from the vagus nerve (cranial nerve X). The vagus provides parasympathetic fibers to most thoracoabdominal organs, including the kidneys, via the renal plexus. In contrast, the pelvic splanchnic nerves (S2–S4) supply pelvic organs, not the kidneys. The spinal levels listed (T10–L2 or T11–L2) represent sympathetic input to the kidneys, not parasympathetic. So the correct source of parasympathetic innervation for the kidneys is the vagus.

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