The hypothalamicâpituitaryâthyroid axis (HPT axis for short, aka thyroid homeostasis or thyrotropic feedback control) is part of the neuroendocrine system responsible for the regulation of metabolism. As its name suggests, it depends upon the hypothalamus, the pituitary gland, and the thyroid gland.The hypothalamus senses low circulating levels of thyroid hormone (Triiodothyronine (T3) and Thyroxine (T4)) and responds by releasing thyrotropin-releasing hormone (TRH).he TRH stimulates the pituitary to produce thyroid-stimulating hormone (TSH). The TSH, in turn, stimulates the thyroid to produce thyroid hormone until levels in the blood return to normal.
Average Shipping weight of Media. Average weight of a: DVD weighs an average of 4 oz. Xbox 360 video game or a PS3 Game (COMPLETE) weighs an average of 5 oz. Same for a Wii Game. A complete CD weighs an average of 4 oz. Variables: A 2 Disc DVD set, weighs an average of 5 oz . If either of these items has a Cardboard Sleeve, add 1 oz to the weight. *Most of these items actually weigh less that 4.5 oz. but you have to round up if it exceeds an ounce, for shipping purposes. I will do a post for books next.
Posts: 968. Depends on how much the DVD material is compressed. A single sided DVD holds about 4.3GB and a typical retail DVD has perhaps 2 hours of material. On 1TB, you'd get about 1TB / 4.3GB x 2 hours = 465 hours. So a reasonable ballpark would be 400 - 500 hours.But it depends on the amount of compression (i.e., the bitrate).osts: 968. Depends on how much the DVD material is compressed. A single sided DVD holds about 4.3GB and a typical retail DVD has perhaps 2 hours of material. On 1TB, you'd get about 1TB / 4.3GB x 2 hours = 465 hours. So a reasonable ballpark would be 400 - 500 hours.