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Sodium Homeostasis

Meaning

The physiological process of maintaining a stable concentration of sodium ions (Na+) within the body’s extracellular fluid, a state essential for regulating plasma volume, blood pressure, and neuromuscular function. This delicate balance is tightly controlled by complex neuroendocrine feedback loops involving the kidneys, adrenal glands, and brain. Deviation from this homeostatic state can have profound cardiovascular and neurological consequences.