Q:

The thyroid gland

safaTerkawi
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2022-08-15
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The thyroid gland.

  1. Takes up iodide against its electrochemical gradient.
  2. Decreases in size when dietary iodine is deficient.
  3. Is relatively avascular.
  4. Contains enzymes which oxidize iodide to iodine.
  5. Contains enzymes which iodinate tyrosine.
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safaTerkawi
2022-08-15
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A. True It is taken up by an active process (the iodide pump).

B. False Hyperplasia due to TSH stimulation occurs to give goitre.

C. False It has one of the highest blood flow rates in the body; bleeding during surgery may be a problem.

D. True This is a stage in the formation of thyroxine.

E. True Iodination takes place in the colloid.

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