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Parathyroid Hormone

Written by the Fiveable Content Team โ€ข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated September 2025

Definition

The parathyroid hormone is a hormone produced by the parathyroid glands that helps regulate calcium levels in the blood. It increases calcium levels by stimulating the release of calcium from bones and decreasing its excretion in urine.

Parathyroid Hormone Definition - AP Psychology Key Term | Fiveable