List of North American cities by population. This list of North American cities by population ranks cities based on the latest available official government census figures, estimates or projections for mid-year populations (unless otherwise noted) living within city limits. All cities with a population exceeding 500,000 are included. 1  1 List.  2 See also.
The pituitary gland sends signals to other glands, for example the thyroid gland, to produce hormones, such as thyroid hormone. The hormones produced by the pituitary gland and other glands have a significant impact on bodily functions, such as growth, reproduction, blood pressure, and metabolism.umors can cause damage to the pituitary gland or hypothalamus and can therefore result in a loss of function. Damage to the pituitary gland can also be caused by radiation, surgery, infections such as meningitis, or various other conditions. In some cases, the cause is unknown.
The thyroid gland must have iodine to make thyroid hormone. iodine comes into the body in food and travels through the blood to the thyroid. Keeping thyroid hormone production in balance requires the right amount of iodine. Taking in too much iodine can cause or worsen hypothyroidism.â¢ Damage to the pituitary gland.