I hate poachers and I love animals, but this guy I hard not to love and he does make a good villain. Utterly cruel and psychotic, he loves killing and is greedy. In fact, he's so psychotic that he attempts to feed Cody to the crocodiles when he no longer has use for him.
The first is leptin, which is a hormone secreted by your fat cells that acts as an appetite suppressant. Leptin levels peak when you fill up on food. So, when you eat a lot, your appetite goes away. If you ever said, 'I am so full I couldn't eat another bite,' then in that moment, your body was flooded with leptin.
T3 and T4 are secreted by the follicular cells. Calcitonin is secreted by the parafollicular cells of the thyroid gland and acts to decrease blood calcium levels.1 person found this useful.the concentration of specific nonhormonal substances in the blood or extracellular fluid.) Calcitonin is produced by the parafollicular cells of the thyroid â¦ gland in response to rising blood calcium levels.