Since I'm on the topic of hyperthyroid, I thought I'd share a little mnemonic I just made about the steps of thyroid hormone synthesis that are affected by TSH stimulation.
HYPERplasia of the follicle cells
Autoimmune hyperthyroid, aka Grave's Disease, creates antibodies that resemble TSH and trigger all of these steps willy-nilly without any regulation! This makes your follicular cells very hungry for iodine and they start sucking out all of their stored colloid and dumping the hormones out into the system.
I'm not going to bore you with all of the nitty gritty details. For that, you can go to Boron & Boulpaep or my favorite, Guyton and Hall.