Atomic Number (Z) = Number of protons =Number of electrons. For example, an atom of magnesium contains 12 protons, therefore, its atomic number is 12. All the atoms of a particular element contain same number of protons in their nuclei. Therefore, all the atoms of an element have same atomic number.
The thyroid gland is an organ located in the front of your neck and releases hormones that control your metabolism (the way your body uses energy), breathing, heart rate, nervous system, weight, body temperature, and many other functions in the body.
The thyroid (THY-royd) gland, a small butterfly-shaped gland in the front of your neck, makes thyroid hormones. Thyroid hormones travel from the thyroid gland through the blood to all parts of the body, where they do their work.