Illustration of the four parathyroid glands and a molecule of parathyroid hormone. The glands are situated behind the thyroid gland. They produce parathyroid hormone, which regulates the amount of calcium in the blood and within the bones. | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Kon, Kateryna |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |