| That observation suggests a third active substance is secreted by the thyroid gland. |
| The thyroid gland is located under the Adam's apple in the front part of the neck. |
| The thyroid gland is situated in the throat, on either side of the windpipe. |
| Increased activity of the thyroid gland makes the small fish lose their rainbow-like markings and adopt a silvery sheen. |
| In addition to palpation of the thyroid gland, a thorough examination of the lymph glands in the head and neck should be performed. |
| They fill up the thyroid gland and stop it from absorbing any radioactive iodine released by the reactor. |
