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FISIOLOGI MANUSIA.pdf - Staff UNY

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Regulasi hormon Tiroid<br />

Sistem umpan balik hipotalamus-pituitari anterior-kelenjar tiroid<br />

menjelaskan mengapa defisiensi iodin menyebabkan penyakit<br />

gondok. Apabila iodin tidak mencukupi, kelenjar tiroid tidak<br />

dapat mensintesis T3 atau T4 dalam jumlah mencukupi.<br />

Dengan demikian pituitari akan terus mensekresi TSH, dan<br />

menyebabkan pembesaran tiroid.

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