The roles of the pituitary gland and hypothalamus, which control thyroid hormone levels via secretion of TSH and TRH, respectively, have been discussed elsewhere. A fourth class of hypothyroidism is congenital...implying a defect at birth that affects thyroid hormone synthesis, transport to tissues or iodine metabolism.
exists and is an alternate of . It depends on which snakes your referring to, cobras, pythons, boa constrictors, rattlesnakes, and vipers all move at a rate of 3-7 mph. But the Black Mamba can move at 20 kmph or 8 mph, which in the snake world is super fast.
Size: A number of different rattlesnakes live in the United States, and they range in size from the 1 foot long ridge-nosed rattlesnake to the 5 to 8 foot long eastern diamondback.