A normal adult thyroid gland weighs 10 to 20 g and receives blood from bilateral superior and inferior thyroid arteries and a small artery called the thyroid ima. The thyroid secretes two hormones. Thyroxine (T 4) makes about 90% of hormone production, and triiodothyronine (T 3) produces the other 10%.
Fast Growing Cold Hardy Tree. - Grows up to 5 ft per year! The Quaking Aspen is well known for thriving in cold climates and poor soil... but it's also a brightly colored tree with many desirable characteristics.
One of the Fastest Growing Trees you can put in your Landscape. If your growth requirement is speed, this is the tree for you. In fact, the Corkscrew Willow grows so fast you should take that into consideration when determining the planting location. The great news is it will top out at a nice height of about 30 feet.