Which hormone, produced by the thyroid gland, works opposite to parathyroid hormone (PTH)?
A) thyroid hormones
B) testosterone
C) estrogen
D) calcitonin

Name: Which hormone, produced by the thyroid gland, works opposite to parathyroid hormone (PTH)? A) thyroid hormones B) testosterone C) estrogen D) calcitonin
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Calcitonin is produced by the thyroid gland and works to lower blood calcium levels, opposing the action of parathyroid hormone (PTH), which increases blood calcium levels.

Which Hormone, Produced by the Thyroid Gland, Works Opposite to Parathyroid