What is the main hormone produced by the thyroid gland?

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Multiple Choice

What is the main hormone produced by the thyroid gland?

Explanation:
The thyroid gland’s main job is to regulate metabolism through its hormones, and the primary hormone it releases is thyroxine, also known as T4. It’s released into the bloodstream and is largely converted to the more active form, T3, in body tissues. This thyroid hormone sets the basal metabolic rate and supports normal growth and development. A second thyroid product, calcitonin, helps regulate calcium levels but isn’t the main driver of metabolism. Parathyroid hormone comes from the parathyroid glands, and melatonin is produced by the pineal gland.

The thyroid gland’s main job is to regulate metabolism through its hormones, and the primary hormone it releases is thyroxine, also known as T4. It’s released into the bloodstream and is largely converted to the more active form, T3, in body tissues. This thyroid hormone sets the basal metabolic rate and supports normal growth and development. A second thyroid product, calcitonin, helps regulate calcium levels but isn’t the main driver of metabolism. Parathyroid hormone comes from the parathyroid glands, and melatonin is produced by the pineal gland.

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