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.
Like other reptiles, rattlesnakes are âcold-bloodedâ or ectothermic, relying essentially on outside heat sources rather than an internal metabolism to maintain their body temperature. They typically function most effectively at temperatures between about 70 and 90 degrees Fahrenheit (21 to 32 degrees Celsius).