Responsible for thyroid hormone actions; Carried in blood by transport proteins.
Convert iodine from foods into thyroid hormones.
T3 & T4
Elevates oxygen and energy consumption; Body temp. rises in children; Increases HR and BP; Increases sensitivity to sympathetic stimulation; Maintains sensitivity of respiratory enters to changes in oxygen and carbon dioxide; RBC formation; Stimulates other endocrine tissues
Accelerates turnover of bone minerals.
Produces parathyroid hormone; released in response to low Ca2+ concentration; Stimulates bone to release Ca2+; Inhibits bone uptake of Ca2+; Increases Ca2+ reabsorption in kidneys; Increases gastrointestinal tract reabsorption of Ca2+ via calcitriol.
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