<P> Graves' disease involves the hyperactivity of the thyroid gland which produces the T3 and T4 hormones . Graves' disease effects range from excess sweating, fatigue, heat intolerance and high blood pressure to swelling of the eyes that causes redness, puffiness and in rare cases reduced or double vision . </P> <P> A neuroendocrine system has been observed in all animals with a nervous system and all vertebrates have an hypothalamus - pituitary axis . All vertebrates have a thyroid, which in amphibians is also crucial for transformation of larvae into adult form . All vertebrates have adrenal gland tissue, with mammals unique in having it organized into layers . All vertebrates have some form of renin--angiotensin axis, and all tetrapods have aldosterone as primary mineralocorticoid . </P> <Ul> <Li> <P> Female endocrine system . </P> </Li> <Li> <P> Male endocrine system </P> </Li> </Ul> <Li> <P> Female endocrine system . </P> </Li>

What is the function of the endorcrine system