Which of the following hormones containsiodine? [2009]a)Testosteroneb)Adrenalinec)Thyroxined)InsulinCorrect answer is option 'C'. Can you explain this answer?

Question

Which of the following hormones containsiodine?   [2009]a)Testosteroneb)Adrenalinec)Thyroxined)InsulinCorrect answer is option 'C'. Can you explain this answer?

Answer

Thyroxine

Thyroxine is a hormone that contains iodine. It is produced by the thyroid gland, which is located in the neck. Thyroxine plays a crucial role in regulating the body's metabolism, growth, and development.

Importance of Iodine in Thyroxine

Iodine is an essential component of thyroxine. When the body is deficient in iodine, it cannot produce enough thyroxine, leading to conditions like hypothyroidism. Iodine is absorbed from the diet and used by the thyroid gland to synthesize thyroxine.

Functions of Thyroxine

Thyroxine regulates the body's metabolic rate, affecting how quickly the body uses energy. It also plays a role in growth and development, particularly in children. Thyroxine levels are tightly regulated by feedback mechanisms involving the thyroid gland and the pituitary gland.

Effects of Thyroxine Imbalance

An imbalance in thyroxine levels can have significant effects on the body. Too much thyroxine (hyperthyroidism) can lead to symptoms like weight loss, rapid heartbeat, and nervousness. Too little thyroxine (hypothyroidism) can cause symptoms such as fatigue, weight gain, and depression.

Conclusion

In conclusion, thyroxine is a hormone that contains iodine and is essential for regulating metabolism, growth, and development in the body. Iodine deficiency can lead to problems with thyroxine production and overall thyroid function.

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