A patient's thyroid gland has been removed, and supplemental hormone therapy has not yet been started. Which of the following will most likely be observed if the patient's blood is tested two weeks after the procedure?
Group of answer choices
decreased levels of thyrotropin-releasing hormone (TRH)
increased levels of calcitonin
increased levels of thyroid hormone (TH)
increased levels of thyroid-stimulating hormone (TSH)
Answer : increased levels of thyroid-stimulating hormone (TSH).
Explanation : Thyrotropin-releasing
hormone (TRH) is produced by the neurons
in the hypothalamus, that stimulates the release
of thyroid-stimulating hormone which stimulate the
production of Thyroid hormone mainly thyroxine.
During thyractomy the concentration of TRH in blood is elevated
which increases the level of TSH to stimulate the release of
thyroid hormone for maintaining thyroid hormone level in blood
homeostasis... Thanks dear student
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