The thyroid hormone has an enormous range of effects on the human body. The given video explains the mechanism of action and functions of this hormone. It has also elaborated the effects of this hormone on various organs and organ systems. timeline: 0:07 Introduction 0:19 TRH & TSH release 1:15 T3 & T4 release 1:51 hyperthyroidism 3:04 effect on bones 3:27 effect on muscles 3:43 effect on normal body cells 4:58 effect on cardiac output 5:15 effect on nerve development 5:41 effect on GIT 5:58 effect on skin 6:15 overview