Hyperthyroidism is a condition in which an overactive thyroid gland is producing an excessive amount of thyroid hormones that circulate in the blood.(Hyper means over in Greek). Thyrotoxicosis is a toxic condition that is caused by an excess of thyroid hormones from any cause.Thyrotoxicosis can be caused by an excessive intake of thyroid hormone or by overproduction of thyroid hormones by the thyroid gland.hyrotoxicosis is a toxic condition that is caused by an excess of thyroid hormones from any cause. Thyrotoxicosis can be caused by an excessive intake of thyroid hormone or by overproduction of thyroid hormones by the thyroid gland.
The government was formed in 1789, making the United States one of the world's first, if not the first, modern national constitutional republics. The United States government is based on the principle of federalism, in which power is shared between the federal government and state governments.
1 In a presidential system, the central principle is that the legislative and executive branches of government are separate. 2  This leads to the separate election of president, who is elected to office for a fixed term, and only removable for gross misdemeanor by impeachment and dismissal. number of key theoretical differences exist between a presidential and a parliamentary system: 1  In a presidential system, the central principle is that the legislative and executive branches of government are separate.