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.
T3 and T4 are secreted by the follicular cells. Calcitonin is secreted by the parafollicular cells of the thyroid gland and acts to decrease blood calcium levels.1 person found this useful.the concentration of specific nonhormonal substances in the blood or extracellular fluid.) Calcitonin is produced by the parafollicular cells of the thyroid â¦ gland in response to rising blood calcium levels.