Question : On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. Please help Ketki and her fridnds to find out the solutions to the following questions. How is it caused ?

Question : On an educational trip to Uttaranchal, Ketki and her friend

1.	Question : On an educational trip to Uttaranchal, Ketki and her friends observe that many local people were having swollen necks. Please help Ketki and her fridnds to find out the solutions to the following questions. How is it caused ?
Answer» SOLUTION :Thyroid hormones `T_(3)` and `T_(4)` requires iodine. Due to DIFICIENCY of iodine HYPOTHYROIDISM is observed in which thyroid GLAND ENLARGES.