From Wikipedia, the free encyclopedia. Calcitonin (also known as thyrocalcitonin) is a 32-amino acid linear polypeptide hormone that is produced in humans primarily by the parafollicular cells (also known as C-cells) of the thyroid, and in many other animals in the ultimobranchial body.t acts to reduce blood calcium (Ca 2+), opposing the effects of parathyroid hormone (PTH). Calcitonin has been found in fish, reptiles, birds, and mammals.
The timber rattlesnake is 1 of 2 venomous snakes in Minnesota, the other being the eastern massasauga (Sistrurus catenatus). While the eastern massasauga also has a gray to tan rattle, it is a smaller snake (47-76 cm; 18.5-30 in.
In fact more people die from wasp and bee stings than from snake bites. http://www.idahogeocachers.org/images/graphics/rattler.jpg (broken link) The only poisonous snake found in Idaho is the Rattlesnake. Rattlesnakes bite their victims with fangs that are hinged to swing downward from the snake's upper jaw. Venom is injected into the victim through grooves along the fangs.