<P> Parathyroid glands are small endocrine glands in the neck of humans and other tetrapods that produce parathyroid hormone . Humans usually have four parathyroid glands , variably located on the back of the thyroid gland . Parathyroid hormone and calcitonin ( one of the hormones made by the thyroid gland ) have key roles in regulating the amount of calcium in the blood and within the bones . </P>
<P> Parathyroid glands are small endocrine glands in the neck of humans and other tetrapods that produce parathyroid hormone . Humans usually have four parathyroid glands , variably located on the back of the thyroid gland . Parathyroid hormone and calcitonin ( one of the hormones made by the thyroid gland ) have key roles in regulating the amount of calcium in the blood and within the bones . </P>
where is the parathyroid located in the human body
where is the parathyroid located in the human body
the neck
the neck