| 11. | Not enough thyroxine can cause lethargy and tiredness.
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| 12. | Thyroxine is critical to the regulation of metabolism and growth throughout the animal kingdom.
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| 13. | Production of TSH and TRH is decreased by thyroxine by a negative feedback process.
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| 14. | For hypothyroid patients on thyroxine, measurement of TSH alone is generally considered sufficient.
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| 15. | The form of heterochrony in the olm is neoteny delayed tissues to thyroxine.
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| 16. | Herbs that help stimulate the production of thyroxine are chillies and kelp which contain iodine.
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| 17. | Iodine is needed in trace amounts for the production of thyroid hormones such as thyroxine.
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| 18. | Hypothyroidism is a disease diagnosed by decreased levels of serum thyroxine ( T 4 ).
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| 19. | Iodine is an essential component of thyroxine.
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| 20. | Increased thyroxine levels accompanied with decreased neuromuscular responses together provide best evidence for TM diagnosis.
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