PATHOLOGY

Detailed explanation-1: -Thyroxine, an iodine-containing hormone, is secreted by the thyroid gland. It increases the rate of cell metabolism and regulates growth. Thyroxine can also be made synthetically for treatment of hypothyroidism.

Detailed explanation-2: -What is thyroxine? Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland. It is the inactive form and most of it is converted to an active form called triiodothyronine by organs such as the liver and kidneys.

Detailed explanation-3: -Thyroid gland secretes 80 micrograms of iodine in the form of T3 and T4 hormones per day; 40 micrograms of iodine secreted appear in extracellular fluid (ECF) per day.