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.
The Jackalberry tree can grow very tall, up to 80 feet, with a trunk circumference of 16 feet. Most trees don't grow that tall, however, and heights of 15 to 18 feet are more usual. The trunks grow straight and high, with the first... [more information].