Thyroid tail, and fins of tadpoles. Iodine, via iodolipids, has favored the evolution of terrestrial animal species and has likely played a crucial role in the evolution of the human brain. Thyroid The thyroid gland, or simply the thyroid, is an endocrine gland in the neck, consisting of two lobes connected by an . It is found at the front of the neck, below the Adam's apple. The thyroid gland secretes thyroid hormones, which primarily influence the metabolic rate and protein synthesis. The hormones also have many other effects including those on development. The thyroid hormones triiodothyronine (T) and thyroxine (T)
Desiccated thyroid extract Desiccated thyroid extract Desiccated thyroid or thyroid extract refers to porcine or bovine thyroid glands, dried and powdered for therapeutic use. Animal extract thyroid preparations were developed in the late 19th century, and are still in use today for the treatment of hypothyroidism. This product is sometimes referred to as "natural thyroid", "natural thyroid hormones", "pork thyroid", thyroid USP, thyroid BP, or by the name of a commercial brand, such as "Armour Thyroid" , "NP Thyroid" or "Nature-Throid" & "Westhroid". Desiccated thyroid has been described in the United States Pharmacopoeia for a century as "the cleaned, dried, and powdered thyroid