The thyroid is a butterfly-shaped gland that lies in front of the windpipe (trachea), just below the voice box. The parathyroid glands are four tiny glands located behind the thyroid gland. The parathyroid glands produce a substance (parathyroid hormone) that helps control the amount of calcium in the blood.
Explanation:
Gene expression is the process by which the instructions in our DNA are converted into a functional product, such as a protein.
Binary ionic compounds are named in the pattern of metal, then nonmetal.
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