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.
There are 7 different species of rattlesnakes found in California. Two of these species consist of more than one subspecies, making a total of 10 different kinds of rattlesnakes found in the state.
Eastern Diamondback Rattlesnake (Crotalus adamanteus) - Venomous. Description: The eastern diamondback rattlesnake is the largest of the 32 species of rattlesnake currently recognized. They are large, heavy-bodied snakes with large, broad heads with two light lines on the face. Adults are usually 33-72 in (84-183 cm) long, but the largest individual on record was 96 in (244 cm).