Thyroxine and triiodothyronine are secreted by which gland?

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Thyroxine and triiodothyronine are thyroid hormones that drive the body’s metabolic rate and support growth and development. They are secreted by the thyroid gland in the neck, produced by the follicular cells using iodine, and released into the bloodstream in response to thyroid-stimulating hormone from the pituitary. The other glands have different roles: the parathyroid glands secrete parathyroid hormone for calcium regulation, the pancreas secretes insulin and glucagon, and the pituitary gland releases various hormones but not these thyroid hormones directly (though it influences their release via TSH).