Question
Simple goiter (A) is due to lack of iodine in the diet. (B) is due to high levels of thyroxine in the blood. (C) is an enlargement of the thymus gland. (D) is described by all of these characteristics.
Ask by Hodgson Wang. in the United States
Feb 06,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
Simple goiter is caused by a lack of iodine in the diet.
Solution
The correct answer is:
**(A) is due to lack of iodine in the diet.**
**Explanation:**
- **Option A:** *Correct.* A simple or endemic goiter is primarily caused by iodine deficiency in the diet. Iodine is essential for the synthesis of thyroid hormones. When there's insufficient iodine, the thyroid gland enlarges in an attempt to capture more iodine from the bloodstream, leading to goiter formation.
- **Option B:** *Incorrect.* Simple goiter is not caused by high levels of thyroxine (T4) in the blood. In fact, iodine deficiency typically leads to decreased thyroid hormone production, not an excess.
- **Option C:** *Incorrect.* Goiter refers to the enlargement of the **thyroid gland**, not the thymus gland. These are two distinct glands with different functions in the body.
- **Option D:** *Incorrect.* Since only Option A is correct, it's not accurate to state that all the options describe simple goiter.
**Summary:** Simple goiter is most commonly due to iodine deficiency in the diet, making Option A the correct choice.
**Answer:** A
Reviewed and approved by the UpStudy tutoring team
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Simplify this solution Mind Expander
Simple goiter is due to a lack of iodine in the diet. Without sufficient iodine, the thyroid gland cannot produce enough thyroid hormones, leading to its enlargement as it attempts to compensate. This condition is particularly prevalent in areas where iodine-rich foods are scarce. In real-world application, ensuring proper iodine intake is essential for thyroid health. Foods like iodine-fortified salt, fish, dairy, and certain grains can help prevent simple goiter. Public health initiatives often promote these dietary sources to combat iodine deficiency, especially in vulnerable populations!
