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.
Weight: Using a formula of length-weight relationships, a seven-foot wild rattler would weigh about 15 pounds and an eight-foot snake would weigh 23 pounds. I next investigated Texas rattlesnakes and discovered the two largest rattlesnakes found in Texas are the Western Diamondback and the Timber Rattlesnake.