Question
Biology Question on Human Endocrine System
Which of the following is used in the treatment of Thyroid cancer
A
I131
B
U238
C
Ra224
D
C14
Answer
I131
Explanation
Solution
The correct option is (A) : I131
I-131, sometimes known as iodine-131, is a radioactive element. Cancer of the thyroid is treated with it. The thyroid gland absorbs iodine from the blood in order to synthesise the hormone thyroxine, which is made from iodine. It is concentrated in the thyroid gland when radioactive iodine is administered to a cancer patient in modest doses because the thyroid gland absorbs radioactive iodine from the blood, which kills thyroid gland cells. Therefore, the enlarged thyroid tissue can be destroyed by radioactive iodine.