Iodine is transpoed to the thyroid gland by ?
Correct Answer: Active transpo
Description: Ans. is 'a' i.e., Active transpo Iodine uptake for thyroid hormone synthesis:Iodine uptake mediated by thyroid follicular cells from the blood plasma is the first step for the synthesis of thyroid hormones.This ingested iodine is bound to serum proteins, especially to albumins.The rest of the iodine which remains unlinked and free in bloodstream, is removed from the body through urine.Basolateral membrane of thyroid cells (follicular cells) have active transpo system for iodine uptake - Na+ : I- sympoer (NlS) (Secondary active transpo).This trapping stimulated by TSH,
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Physiology
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