1 Muscle twitching of one arm and Muscle symptoms (4 causes). 2  Muscle twitching of one arm and Muscle twitching in children (4 causes). 3  Muscle twitching of one arm and Muscle weakness (4 causes). 4  Muscle twitching of one arm and Musculoskeletal symptoms (4 causes).
Parathyroid hormone is secreted by the parathyroid glands and is the most important regulator of calcium levels in the blood and within the bones.Alternative names for parathyroid hormone PTH; parathormone; parathyrin.arathyroid hormone is secreted by the parathyroid glands and is the most important regulator of calcium levels in the blood and within the bones. Alternative names for parathyroid hormone PTH; parathormone; parathyrin.
The parathyroid hormone (PTH) is secreted by the parathyroid gland, four small glands located on the posterior surface of the thyroid gland.The hormone is regulated by the calcium and phosphate levels in the blood and acts primarily on the bone and kidneys to increase circulating levels of calcium.Over-or underactivity of the parathyroid gland ultimately impacts on the blood and urine calcium levels due to an excess or deficiency of parathyroid hormone.f there is any chronic deficiency of calcium, the parathyroid gland will expand in size (hypertrophy) to compensate for sustained PTH secretion. Conversely, a persistent elevation in the calcium levels will cause the parathyroid glands to shrink in size.