Well, they all are produced by endocrine glands. Other than that, hormones in general have specific roles and aren't the same at all. Our bodies are in a constant chemical turmoil as different buffer systems driven by the endocrine glands, mostly, try to keep everything within narrow limits that are compatible with life. Poor penguins have been chopped up enough trying to figure how they cope with extreme length days and nights.
Well, they all are produced by endocrine glands. Other than that, hormones in general have specific roles and aren't the same at all. Our bodies are in a constant chemical turmoil as different buffer systems driven by the endocrine glands, mostly, try to keep everything within narrow limits that are compatible with life. Poor penguins have been chopped up enough trying to figure how they cope with extreme length days and nights.