https://www.onlinebiologynotes.com/what-is-thyroid-gland/ A Complete notes for Students Fri, 03 May 2019 11:16:34 +0000 hourly 1 https://www.onlinebiologynotes.com/what-is-thyroid-gland/#comment-7 Wed, 22 Mar 2017 13:28:09 +0000 http://www.onlinebiologynotes.com/?p=46#comment-7 Sir if T3 is much more active than T4 then why the level of T4 is more in blood than T3.Is it because it might work on the way before it reaches the target cell.And if its T3 that is more active does the T4 after reaching to target cell convert to T3?

]]> https://www.onlinebiologynotes.com/what-is-thyroid-gland/#comment-6 Wed, 22 Mar 2017 13:23:52 +0000 http://www.onlinebiologynotes.com/?p=46#comment-6 Sir can u plz tell the location where parafollicular cell is present.Is it present on the wall of thyroid follicle .And is its secretion calcitonin also present in colloid along with synthesized T3 and T4

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