Define 'hormones'. Name the hormone secreted by thyroid. Write its function. Why is the use of iodised salt advised to us?
Answers
Hormones are chemical messengers that are secreted directly into the blood and exert many functions. Thyroxin is secreted by thyroid. It plays a vital role in digestion, heart and muscle function. It is advised to take iodised salt because iodine is necessary for the thyroid gland to make thyroxin hormone. In case iodine is deficient in our diet, there is a possibility we might suffer from goitre.
Answer:
A hormone is any member of a class of signaling molecules, produced by glands in multicellular organisms, that are transported by the circulatory system to target distant organs to regulate physiology and behavior.
Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland. It plays vital roles in digestion, heart and muscle function, brain development and maintenance of bones.
Iodine is necessary for the thyroid gland to make thyroxin hormone. In case, iodine is absent in our diet, there is a possibility of Goitre. Iodised common salt contains proper content of iodine. To avoid deficiency of iodine, iodised salt is recommended.